U can swap the calipers, rotors, and master off the 08 to the 07. But the brake lines will not work because u have abs. the brake caliper line runs to abs pump in right side cover than back to master. So u would have to get a front brake line for a non abs 08 and up bike. The o7 brakes will not work correctly with the abs on the 08. U could just plug the the 2 lines fitting on the Pump and bypass the abs. Then install the calipers, master, and line from 07 to 08.