Thanks, you guys getting my point. The # dont lie, cost the same to install a QC as it does a 9" ford where you save the money is in the gear change. I dont have a problem with the chevy rear end I am using, I can get the final drive I need from it. I am trying to understand why not the QC too, if your going to add a big change like a full floater to a class add them both is the way I see it. If all was right in the world rules would be the same per class coast to coast and boarder to boarder.