hey chris, i was wondering why that dually is getting reworked, i would think tbc knows what they are doing, they have some sfi certs for building drag chassis...
If im not mistaken Rob who owns the Dually told me that TBC build the frame out of 1/8" thick wall tubing. The frame was flexing from what I understood. I think they went back and plated the inside of the tubing with 1/4" plate to make it stronger.