I have a 2001 Formula and purchased a set of M/T Drag Radials 275x60x15 and a set of Weld Prostars 15x10's with 7.5 backspace. On LS1 forum a member explained method along with 2 pics how to grind rear calipers to fit wheels. Well without getting into too much detail and grinding right through 1 caliper and the wheel still didn't fit, I seeked some help from the forum. A member told me to buy LT1 calipers as he had same set-up as I and his grinding time was about 45 sec. each because they're much smaller. My question is will LS1 calipers bolt to my mounting bracket? He wasn't sure. I really need some help here. I spent a lot of $$ to turn back now! Thanks.

 

"Anyone" ????