I'm getting ready to build my rear frame rail kick ups for the RPU chassis I just started. The front end is going to have torsion bars. The rear end still needs to be decided. Becasue of the RPU set up I have a lot of room in the rear for what ever I want. Frankly, I just don't know enough to decide. Each one of these choices seems like it'd be cool. Are there disadvantages to one of these over the others? The car may be run down the strip, but it will be mostly a common driver with about 380 HP. thanks for any advise I'm editing to add I'm looking for something that is low maintenance as well.