That clutch is totally wasted, I would re use the fly wheel turn the pressure plate and buy a disc, no warrantee?? I have been running on a Napa clutch for almost four years with a leaky rear main on 36" irok. No slipping stock gears, seems like a faulty disc to me. I have NOT been easy on my truck. Is that program you use to mock a design free? what is it? I like that.