[IWINEZ]

Ummmm you can get longtube headers with one set of cats, my lightning had 4 cats originally, switched to longtube setup with 2 downstream hi-flow cats. Honestly you wont want to go catless, cuz 3 inch hi flows are loud! Id be in for this setup as long as its a complete kit, gaskets, hardware, cats etc. The difficulty is going to come in the fact there is no tuner avalible yet for the truck.