Ok thanks for the feedback guys. I wanted to run my setup by you as well and see what you thought. I am still undecided on if I will run a cat or the stock resonator but this is what I am thinking.......

LPP Long Tube Headers
LPP 3" Y pipe with cut flange to accept 3.5" pipe
3.5" Cut out at Y Pipe
Possible 3.5" high flow cat
Stock 6.2 muffler
Stock 6.2 exhaust out the back cut to fit (should I leave the resonator or remove it?)

Thanks for any help/comments guys. This will be on an 02 rcsb with a stock Lq9.

 

If you have a cutout leave it all!!

 

My theory is if I can't drive it 2hrs to the track that way I am not running it.

 

Thats another reason why I was hesitant to pull the whole exhaust is because I want to run it the way I drive it so it will be a "true" street truck. Anyway, any comment on what I plan to install? Opinions, suggestions??