I still have yet to swap gears in my car, going from 2.92's to a free set 4.11's, I have NO care at all about high rpms on the street, doesnt see much street time. I've heard here and there about the 8.2 10 bolt not being as strong as the 8.5 10 bolt, im sure it is true. What im wanting to know is just what kind of difference im looking at, i have some free stuff, possibly even a locker for the 8.2 (dont forget the free 4.11's), i have a roughly 425hp small block and a 4speed tranny, and im fairly abusive on the clutch, what would be my best bet? put a little money in the 8.2, swap and buy new stuff for an 8.5 (if i can find one), or get a narrowed f..d 9" stuff in some 15 X 10 wheels and slicks for the track and use my regular 15 x 8 for the street ????