I have an 84 chevy half ton pick up that had a 355 motor from a 79 truck that was bad so I am puting a 350 from a candian 3/4 ton chevy truck. but the motor mount holes are about an inch off on where the holes line up on the brackes on the frame rails. So where is my problem at. I also replaced the motor mounts with new ones. any Ideas would be greatly appreciated.