Yes i can move the hairpins back towards the rear but,,,,,the further back I go the wider the frame gets. Right now where they are I had to spread them. That's why I was wondering if I can put my mounts under the frame? Also how would I set the ride height? Do I get my wheels and tires, both em on and them set everything? Also how should I measure for the back spacing for the disc brakes as to what wheels I can use.