Mild steel,all steel bodied, square tube front with round tube balk half. F/C cage with new 7.50 cert as of this month. Car was set up to run west coast outlaw 10.5, it had an all aluminum 598 with big chiefs, and two foggers. I have only made 12 passes on car since new, its drives like a dream and went 8.00 @ 165mph lifting at the 1200 ft mark on one stage with 33/10.5 tires. The car will fit 33/16, and comes with weld Magnums for the 10.5's, and another set with 32/14.5. It has perfect paint, and what is not painted is powder coated candy purple to match. Car has billet dual bottle mounts for nitrous, PROFESSIONAL WIRED,,, HEAD LINER WITH DOME LIGHT.