ive been looking for 1 myself.....the biggest thing about them is the shipping is like $200....thats the only thing holding me back.....next time im near penn im gonna grab one from kirbans....i think vfn makes a bolt on too....
I have seen it go both ways. More weight in the rear helps you hook, but then once you hook, you are having to drag all that weight down the track. Best of both worlds is to have a light car, that hooks, and you don't have to worry about perfect placement.