NAPA shows two clutch discs for my 1950 half ton, 216 engine with three speed on the tree. Both have 10 splines and 6 springs.

1. Disc spline size = 1 1/8" Clutch size = 9 1/8" Disc hub I.D./ input shaft size = 9 3/16"

2. Disc spline size = 1 1/8" Clutch size = 10" Disc hub I.D./input shaft size = 10 9/16"

Both kits have the clutch and everything else needed to do the job. Which one should I get for my application?

Thanks!

Chuck
1950 Chevy 1/2 ton (all original)
1951 Chevy 1/2 ton (future streetrod)
1941 Chevy coupe
1938 Chevy coupe streetrod