Well, I got my hands on a 155" 2.5 lug challenger extreme track. Is it really as simple as getting some 155 ice age rails and upgrading the drivers to 2.86 pitch? I would love to go with an timbersled or holtz setup in the rear to loose some #'s but i'm saving money for a Torque Master 1 this summer from the boys at indy specailty.