Certified yellow tagged Continental tapered crankshaft M10. $1500
No need to modify case to work with an M10 crank, you can use old style main bearings.
To help identify I measured and it has a 1" crank throw I.D., has four lock pin holes at front of taper to lock the hub nut in place.
Can send pictures and dimension sheet from D & S.
Tagged by D & S Cam Corp about 3 years ago and has been on my shelf since then. Still in the original shipping bag from them.
dlrude@excite.com
phone 919 365 3063
Dave