I have fit CB Performance rear discs without an interference with the stock 14" wheels. I did have some front wheel clearance issue when running drop spindles so I returned to stock spindles and just a slight drop using beam adjusters. Rear suspension was changed from swingaxle to IRS, I cannot comment on any difference in handling as I never drove this car with the swingaxle installed.
T hanks for the input. The front brakes look to be fairly new aftermarket calipers, but I don't know what the originals look like, so I am not certain about their origin. One is sticky and will have to be addressed. I will probably try the Wilwoods, and will report on them if successful. Have any of you tried sway bars?
The 14 inch wheel limit you in several aspects. http://www.airkewld.com/ has a Wilwood set but you will have to check on fitment. The Puma came with a stock sway bar but if you want to go bigger you will have to do a little clearance work on the trunk fiberglass. Finally I will agree with the others and highly recommend a camber limiter system for the swing arm system that will keep you out of the ditch. Good luck with you ride and check out the Pumagte.com site and post some photos.