[Mike_I]

I am in the process of upgrading my Mustang II brakes over to the Grenada Rotors and GM Calipers. I am using the stock Mustang II control arms. The back of the Grenada rotors end up hitting on the lower control arm near the lower ball joint. Am I missing something here? Do you have to grind on the lower control arm or something? Also, I had to remove the rock guards because they also rubbed on the rotors. Is there anything wrong with leaving the rock guards off?

Thanks for the help!