Quote Originally Posted by outalne94z71 View Post
save yourself the headache and just buy a aftermarket kit, they took care of all the guesswork, just hacking your pipes and running duals most likely will not scavenge properly and your motor will not run right, and just end up as another truck making a bunch of crackle and not going anywhere.
^This!

Hacking your exhaust like you plan on doing is going to reduce power immensely. I would just put a muffler on it with some pipes and call it a day if you don't plan on doing any other engine mods.