What can you do to your F150 supercrew 02 4.6 V8 to get a loud romping sound out of the exhaust what do you need to do to get it super duper loud?

split your exhaust in 2 after the crossover or install a high flow converter and split after that and install a performance muffler like flomax, or my personal favorite thrush glass packs. The older they get the better they sound, I like to help out the aging process by torching out the fiberglass before install, did this on my 66 pony and got a real nice rumble out of her.