I'm looking for an exhaust heat valve (riser) for my 1932 - 67 sedan. When we removed the existing one it fell apart. Have bypassed it but still want to get my hands on one. I was told to contact Mac Blair because he is the guru of '32's but he hasn't responded and his email keeps getting kicked back. Any advice and is Mac still handling he 32 Buick registry?ThanksShoe1932 Buick -671939 Plymouth P-8