some po changed my 46 2 ton to a sm420. they took a solid round rod the size of the holes in the pedals and tapped a hole on the end then drilled a hole in the frame for a bolt. then they welded a
a plate on the inside of the frame then used the regular bell housing. by the way i have a spare sm420 i might trade you for your crash box. i will try to round you up some pics of my pedal assy.
it looks real simple and works great. philip
