Calipers ? front or rear of center

they can go either way. the spindles will fit either side. im sure there is some long complicated reason why then belong on either way but i move mine to the back if i have a sway bar. the brake hose sometimes has to be changed to allow clearance depending on where they end up. also you need to make sure the bleeder screw is up high so you can get all the air out. I have wilwood calipers with 4 corner bleeders so i have them to the back to clear my sway bar.