The 2nd Gen ’33 Hot Rod chassis features an all-new composite and aluminum sandwich floor construction. This cool new chassis feature adds more space underneath the car to make exhaust routing super easy (this was quite a challenge before), and can use larger 3-1/2″ exhaust. The flooring material also increases torsional rigidity of the chassis. Lastly, and perhaps most importantly, the ride is quieter and with better heat insulation. There’s also more interior space and leg room.