My buddy (who is computer scared) bought a 69 SS Camaro that someone had big dreams of drag racing. It will now be a street car so the Moroso solid motor mounts had to go. The engine is a 400 small block. We tried mounts for a 327 and the bolt holes were a good 1 inch off. With a bolt thru the driver side mount the passenger side was an inch away from lining up. We think the chassis mounts are right where GM put them. Which engine mounts do we need? Thank you for your help!