ill think about that...i bought the truck with this exhaust on it but i guess i could make some modifications to it...thanks for the tips

why not just install some small mufflers on the header collectors instead of backpressure producing cats? If the cats are only for noise suppression, get a muffler that'll do the job with little backpressure.

Check out this thred, it gets very interesting towards the end. I'm escondidotundra on this forum How a properly built exhaust system works