Ok, there is a lot of info on brake selections, this where the search function is helpful. Also for more info on the 944 interchangability as well as brake info check out Micheal Ghia's site, I think it's
www.performanceghia.com if I'm wrong it's in the link section on the main page of this site, Micheal site is very helpful. Basically, and I mean basically the 944 brakes are borrowed from 911's and 928's of that era. You'll want to stay away from the 924 stuff cause it's identical to the 1303S setup, lil disc's up front, drums in back, 4 lug junk. There are a number of choices in brakes and suspension setups, depending what you want.