Wow! Someone voted on this thread and woke it from the dead!
Nowadays, we don't have many options. I have the Hedmans on my truck. If you run Remflex gaskets, they seal.
BUT the ports on the Hedman Headers are TERRIBLE and do not match the AMC factory ports at all. Here is my experience with them with lots of pictures:
and parallel thread here:
I would love a set of Thorleys or others but I don't think they are available anymore. We could buy a set of shortys, I guess.
79 Cherokee Chief (passed CA smog check Sept 2020)
(Cherokee Build Thread)
11 Nissan Pathfinder Silver Edition 4x4
09 Mazdaspeed3 Grand Touring