grin Found it. Knew I had 1. I have an after market NOS clutch it's twin is in my 38 1 1/2 ton it seems to be approximately 11 inchs diameter.maybe 10 3/4 if I'm not straight. Manufacturer is Burgess-Norton. Part number CF-3803. Just read a little closer it's for 38 thru 42 oh well post it any way maybe the numbers will help some one else crossreference theirs. Price on box will hurt your feelings.three dollars and fifty nine cents . Wonder what they go for on ebay