Hey Goat, if you're gonna street the thing, use steel tubs. Any gravel, rocks, trash etc. zinging off your tires will ding the heck out of aluminum tubs. A good long burnout on a surface with a bit of gravel on the top of it can rip holes in the aluminum ones!!! Steel tubs are a bit heavier, but the durability will make up for it. If weight is that big a consideration, try the Atkins diet!!!!