nothing , other than the pedal set, tranny, cross member, driveshaft sized to fit and a flywheel.
Having done two, I know that
no balancing is needed
no worries about holding up (have put 45,000 mi on one and 28kmi on the other)
ps- email me if you need help, pictures etc:-
Last edited by grimgaunt; 04-18-2003 at 07:31 PM.