My mate has just traded his immaculate 87 Ur Quattro fo a 88 BMW M3 Alpina B6. this is an M3 with a 3.5 straight six only 62 were made.
I hate BMWs i wanted to hit him when he told me

but then i drove it!! oh man its fun!!
its a handful compared to the Audi but its just awesome
i suppose its the same idea as an RS2, taking the fatest car in the range further still