Yes there can be that much of a quality difference but is there? Probably not.

You want the "Rhino Pac" line of clutch parts for the 1 ton.

It's a great line and I use them ONLY! I maintain a fleet of delivery vans (12000 lbs) and I've never had a premature failure of their hard components.

If Carquest carries the Rhino then order it from them. If they want to fob off the Carquest line on you, pass. It's Chinese junk.