Be carefull with the longer bolts. I had a mustang 2 brake kit from Speedway with the GM calipers. The bolts bottomed out against the back of the piston in the caliper. After not gitting it to seal I removed the bolts and looked though the hole. I could see where the bolt a nicked the back edge of the piston. I ground off a little bit of the bolt and that took care of the problem.