Banshees had about as many changes as a Blaster. They added a tube and a bracket to the J arm to make an A arm frame. Don't know if spindles are different but the caliper is. The J is prefered for dragging as it is lighter, tho after they get done choppin on frames it probably doesn't matter anyhow. Only drawback that I can see is extended J arms aren't as redily available, but they can be had for about same money. Seems also that parts in general are more than for others>