2ton46, just picked up a set of their exhaust gaskets for a 235, not installed as yet. Learned of these from my muffler shop buddy, he's been using them for a while and loves the product. They go on dry so no mess and I like that they are one long piece. I got mine from Summit Racing which is a bit cheaper in price, have Chev and GMC. I'll attach a link to a video on them. Best of luck
http://catalog.remflex.com/