1966 Dodge Dart

Don't know if DMT has gotten into molding anything. .. I believe Jim is carrying other quality seals (like Steele) to be as close to one-stop-shopping as possible. As for the gaskets. They are the manufacturer, and from what I got for my 75, do a great job duplicating original shape and material. Many of them are just not available anywhere else.
It was a long time from when I bought my kit that I was finishing assembly and discovered I needed a couple gaskets that were not there. I told Jim what I needed when I saw him at Carlisle. Had them in my mailbox a few days later- no charge.