This is exactly what I had to do. The problem in my case was the Schumacher mounts left little room for the nut on the motor mount after I shimed the left and right side. I had to shim the transmission mount as well. I was using a /6 K-frame. I managed to trim the threads on 2 newer Moog tie-rods and used a smaller castle-nut. In the end the clearance was minimal to say the least.. Same car 2 years latter I swapped the 416 out with a standard bore 340 and a set of Dougs Headers. There was almost 1/2 more clearance over the TTI's.
