The offset chassis is still the most common for the late model division. The main bars of the cage are 1-3/4" x .095 but many of the internal braces are made from lighter tubing. This mid section will fit any front frame, but only our tail sections will fit directly to it. It is built for 45" to 48" roof height with right side door X standard. 1/8" thick hot roll steel is used for the floor pan, pedal plate and left side rocker/weight tray. The three main frame rails are made of 2" x 3" x 11 ga.. Weighs 259 lbs.