or the pic was taken right after he put them in and he had'nt fired it up yet.

 

Looking at those stacks closer I think it's a photoshop.
The reflections on those shiny pipes don't jive.
I think it might just be an enlarged picture of a tail piece sitting in the back of the truck.

 

AAAAAHHHHHHHH HHHHAAAAAAA HHHHHAAAAAA AHHHHHHHAAAAAAAAAA!!!!!!!!!
Just goto true value and throw a couple aluminum garbage cans in the bed, toss in a tire in each one, douse in diesel,..... ignite!!! You'll have the biggest most neat-o stacks of all the kids at your high school!!
Just kidding. Just pointing out that this stack thing is getting silly. I agree with whoever said 8's or 10's look good on a killer pete or kw, but it's just silly on a pick up.

 

I'm sorry but that guys taste in what looks good is pretty far off... I bet it sounds like farting in a sink..