[madmaxx]

If you have anything over a 302 you need the polyurethane motor mounts, the pos sheet rubber ones allow the motor to torque over putting undue stress on everything. The hanger probably cracked trying to hold the engine from torqueing over, then the pipe hits the body. Install your new mounts and see what the clearance between the pipes and the body are, I would try first before any shims, Eric at PE sells and so does Oltoff racing polyurethant motor mounts for about $120