Give input! Best exhaust for towing?

[Rokcrln]

I am getting ready for the new exhaust system for Low Buck and I will be using this truck for my new tow vehical. I am thinking about going with a 2.5" single exhaust. I am removing the junk headers and going back to stock style manifolds and thought a single exhaust set up might help out with more torque out of my stock 350 w/auto. I know we always went with single's on our rock crawlers because it helped out alot with real low end grunt but what do you think about this for a street truck? Single would also help out with more space under the truck and would be cheaper to have installed but I only want to do it once.

Kevin
LFD Inc.