I'll be towing my drag car and i'd like a little more sack out of my truck can you recomend something? I have just a roush exhaust that exits in front of the rear tire for mods.

 

Get a programmer from a tuner that writes custom tunes for them......links are in my Sig

 

I trailered my Lightning and Cobra with my '01 Supercrew and it handled them easily. I had an exhaust, CAI, and custom tuning from Troyer on the Supercrew. Only place I ever had the Supercrew struggle was when I was coming back from an FFW event in Bristol, coming North on 77 through the mountains.