I followed some contact links somewhere on SCCA Pro website while I was looking for a VTS for my 240SX.
Here's the guy that replied:
Robert Story
SCCA Pro Racing Tech Engineer
Office: 785.862.7129
[email protected]
There is a listing in the attachment he sent for the list of cars registered in 2000. it included the '95 325i, '96 328i, and '97 Ti on the list. no specs other than wheel width, tire size, and weight.
The rest of it you'll have to get from PR...
He also said his VTS database gets pretty sketchy before 2006.
I'd think the BMW was common enough that you can find the info though. maybe even on a BMW site where a former racer posted the info... ???