To clarify a bunch of posts.
The first GrpB cars were long wheelbase UR’s with out flares. The A1
The second GrpB cars had the flares and engine changes. The A2
The third GrpB car was the short wheelbased SportQ. The S1
The fourth GrpB was the short wheelbased SportQ with the 6 spd, biggest engine, uprated suspension and full body kit(flares and big wing). The S1 E2
There wera lot of model roll changes throughout the development of the GrpB cars, For example the early GrpB cars got steel struts, then they went to aluminum, then magnesium, and finally an uprated magnesiom. It’s sort of a fancy to try and figure them all out.
Then there was/were the pikes Peak car(s), and the development cars. Including one putting out 1000HP, a viscous coupled variable toque split tranny. Lot’s of of neat stuff.
After GrpB they tinkered with grpA for a couple years then it was all over for good. Most of that I think was for development of the new B and C chassis motors.
Europe got the A1 in a road verison we got the A2. We never got the SportQ although there are at least 2 over here that I know of.
Our Coupe(GT) was a FWD version only.
We did get the CoupeQ in '90 & '91, although only around 1800 of them.
And technically the TT is considered a Coupe also.