i have seen a couple videos of disco 1s with these and they sound great with their exhaust systems
anyone gone with these?

 

The manifolds we have now are also notorious for cracking so these would be an awesome upgrade for anyone that has a cracked manifold or wants to get some more performance out of their truck. My buddy just cut his cats out and he just has a magnaflow exhaust where the middle muffler used to be and also cut out the muffler just before the end of the exhaust. Sounds like a true V8 now, very impressive. He just used some tube piping to connect the space where the cats used to be.

 

Also, where are those videos you're referring to??