INTERIOR
recaro interior (gsi or st200 depending which you require, dont forget the runners!)
cream or black heated leather interior (cdx or design edition)
sri cloth or full or half leather interior (sri)
inertia rear center seat belt (very early vecs had centre lap belt)
titanium steering wheel (facelift gsi only) cupholders, gearknob, heater surround and clock surround. (sri or gsi but facelift gsi has a solid metal gearknob)
carbon steering wheel, heater surround, window switch surround, coin tray (st or st200)
piano black heater surround, cubby hole, coin tray, window switch surround (design edition)
wood effect heater surround (normal and climate control style), cup holders, cubby hole, gear knob (cd, cdx but facelift cars have a different darker shade than that of the earlier pre facelift vectra)
6 disc glovebox cd changer (cdx but need tape head unit also)
4 disc glovebox cd changer (gsi, cd, design edtion but need tape head unit)
cdx 6 speaker upgrade sound system (cdx)
electric rear window mod (cd,cdx or design edition)
Overhead roof stowage (all facelift vectra's)
Omega Sunroof controls (mark 1 omega but check incase mark 2 will be compatible)
Black A pillars (facelift had cream, pre face had black)
Astra G Sunglasse's holder (astra G, most likely higher spec cars)
cdx rear door seal mod (cdx or design edition)
glovebox a/c mod (bit of a grey area, from what i can gather very early cdx)
climate control (cdx or design edition)
switchable tc mod mod for 2.2 and 2.6 v6 cars that have TC on constant (switch available on gls,cd,cdx,sri,gsi,st,st200 but not 2.2 or 2.6 cars!)
traffic master which was not an option on late vectras including 2.2 or 2.6 v6 vectras (most older pre and facelift vectras but now defunct)
recaro heated seat switch mod. basically fitting heated seat switches to make your recaro seat adjust switches not constantly live (cdx or design edition)
illuminated sun visors (cd,cdx,design edition,sri,gsi)
kerb, map and rear grab handle lights (sri,gsi,cd,cdx,design edition,st,gls,st200)
electric heated wing mirrors (most vectras)
phillips carin or ncdr colour mid sat nav (factory optional extra so very hit and miss finding one)
replace pre face dash switches for facelift and vice versa (self explanatory really! but can also use pre face omega switches as they are the same as vectra ones)
chrome interior door handles (all facelift vectras)
front electric windows (all vectras apart from serious poverty spec versions!)
centre arm rest (most vectras apart from early poverty spec!)
design edition kick/sill plates (design edition)
astra g (mk 4) short gear shift mod. need to find out which gearbox you have (rod or cable type) and get the one you want! (most astra g's but some late astras have a ball and socket for the rod shift stick, this is no good for the vectra so avoid!)
omega (elite model) electric rear window blind (only for saloon vectras)
omega variable wiper speed mod (can get with or without mid controls, need estate omega stalk for estate or hatch vectra)
omega auto dim interior mirror (cdx or elite omega)
omega rear heated seat mod (omega elite only)
EXTERIOR
xenon headlights (cdx,design edition, 2.6 v6 gsi)
headlight washers (cdx, design edition, 2.6 v6 gsi)
standard front fog lights (gls,cd,cdx,sri,design edition)
gsi bumper (gsi,st,st200)
widemouth bumper (late cdx and sri)
irmscher side side skirts and rear valence (pre face gsi only, facelift was optional extra)
steinmetz side skirts (st200 only)
alloys (club,gls,sxi,sri,st,st200,cd,cdx,design edition,gsi. all have there own type and some are different between pre and facelift with regards to style and stud pattern so check!)
colour coded door handles (gls,sri,cd,cdx,design edition,st,st200,gsi)
colour coded door strips (all facelift vectras)
spoiler (sri,gsi,sxi,st,st200)
stainless back box (st,st200,sri,gsi)
jewel rear lights (european facelift vectras)
cupra or laguna front splitter (seat leon cupra or early renault laguna)
vauxhall combo b bee sting aerial (all combo b vans but only fits vectras with smaller aerial screw thread)
ENGINE,SUSPENSION,BRAKES AND TRANSMISSION
brake deflector kit (2.6 v6 gsi)
airdam kit (2.6 v6 gsi)
lowered final drive (st200)
irmscher shocks and springs (st only)
koni adjustable suspension (st200 only)
gsi or sri 20mm drop suspension (gsi or sri!)
st200 ap 330mm (i think?) brake kit (st200 only)
gsi 308mm brake kit (gsi 2.6 v6 only)
limited slip diferential (st200 only)
3.8 fuel pressure regulator (2.6 v6 gsi only but also available on some audis)
plenum chamber oil catch tank (2.6 v6)
3.0 litre g cams (gsi, 2.6 v6 gsi has a cams)
rad cover (cdx, design edition)
3.0,3.2 v6 engine transplant (Omega, Signum, Vectra C GSI)
c20let engine (calibra or cavalier turbo)
z20let (astra g gsi, zafira gsi)
f28 6 speed gearbox (calibra or cavalier turbo)
omega vented rear brake disc mod (omega with vented rear discs!)