I'm tore between two exhuast setups. I love the twin stack (like tractor trailers) using 4" stacks and a bully dog 6" system. I think they both look awesome but sadly enough only one can be used. What would be the pro's and con's of each setup. Does one make so much more power that it's a no brainer or are they gonna be relatively the same as power gains are concerned. Please take into mind i'm not making a race truck, i'm looking for more power to pull my race car while still looking good.

 

Don't believe either set up will ad noticable power. Stacks look great (should be 5", IMO) but the do throw a lot of soot and can get real load when towing.
Really your choice. I see no reason, other than personal preference, for one over the other!

RJ

 

Alright then thanks. I think i'll go with the stacks and that'll keep the exhaust off my car when towing.