I'm not a fan of building a shiifter cart, I have no place to run it here at all. The r1 banshee sounds really good, I have already thought of that and been looking at some roller chassis's.
I think a mini sand rail with some big suspension would be cool. Or a "car" I can run on the street. If I built a tube chassis I could start with a rotten mini that I could pick up cheap, its only hard/expensive to find a solid one but I already bought a bunch of mini shit for a b series one so I dont think I need two.