I'm in the process of this swap now on my 46.

The original clutch disc measured just under 11"

This clutch from Rock Auto is the exact same diameter but with 1" 14 spline for the S-10 T-5. (SACHS BBD4212)
about $90 shipped....

Hope this might help you. I just trimmed the bearing retainer about 3/4" to make everything as identical as I could to the crash box dimensions. I also used an adapter plate and am ready to prefit the trans to check clutch clearance. (Hopefully tomorrow)