Yes I am an idiot and didnt realize it was a 28oz balancer. It threw me off because all ATI balancers say "this is a zero balance unit" on the front of them. But of course some have a weight on the back. Not sure why they do this, but a little research and a call to ATI helped me to understand, I had a 28oz imbalance super damper. Works and looks great. Has not been modified at all. This one doesnt need it right now but the great thing about ATI balancers is that they are rebuildable when the time comes.
The Hub portion is seperate from the balancer part and is held with screws. These are the same dampers used by the winston cup cars. Check out the website it has some good info about them.
anyway still for sale call me lets get it in the mail.