Hey guys, my borther and I want to both do a gear swap in our cars, his is a 95 GT Mustang with a 5-speed, and 3:55 Trak-Lok Gears I believe. He wants to to put in 3:73's or 4:10's. My car is a 97 4.6 T-Bird with an open 3:27. I would like to put on 3:73's or 4:10s also. How much would it cost my brother to get the gears and have them installed? How much would it cost me to have TL rear end installed? Thanks for any help.