So where is the rear fog light?
Likely not a CSi - incorrect gas tank and the airbox (would be nice to see the box as that would confirm) holder on the passenger fender looks like it was pop riveted on. Probably a K (L maybe?) Jet setup. Sunroof car with this seller means 95% chance of front A pillar/fender box area cancer underneath. My experience is most (not all) injected E9s had front roll up windows and velour seats, so lots to question here. It is googout after all......
The 73 front bumper irons and shoulder belt holder on the roof says 73 to me.