This chassis is made using 4 mm 7075-t6 grade aluminum and anodized clear. this material is time tested to provide much more rigidity to the chassis. We have also added steel droop steel stops as this is a major wear point of any chassis on the market. this chassis is made to run as a stock chassis set up. It is not designed to reverse the motor mount for longer cans reversing the diffs. It can be done if you dremmel the clearence for the gears in the chassis.