I can say it is smaller 11/16" on 90-91 awd and 92-99 fwd 3s cars. I'm trying to acquire one used to test this out. If your shopping goto here
http://www.3sx.com/store/comersus_vi...dProduct=24254
It's the blue one the gray one is the same size as a dsm. Ill keep you posted when i get one. It should have a bit heavier pedal but possibly a better throw for heavy (ie 2600) clutches.