I'm trying to install a 427 into my 59 Chevy and have purchased a new set of exhaust manifolds that are cast 14045184 RH and 3964244 RH on the right side manifold. My problem is the 69 Impala mounts hit the manifold on the right side.

Is there a site that shows the different types of mounts for the varios years and body styles available.

Our NAPA only caries newer mounts so we can't pull them off the shelves to compare different ones.

Any guidance would be greatly appreciated.

Tom in Missouri