I guess Carter Brothers is out of business-no luck finding the metal disc that goes on the end of the crankshaft(like old rear engine Snapper mower) so I am checking into possibility of using a Snapper disc..Disc has 1 inch hole and cheap motor has 7/8 shaft so will have to use a sleeve and maybe a step key--dont know about key requirement yet...mow the big problem is that the Kart needs short shaft engine--with old disc stuck in the way, best U can tell shaft only needs to be 1 inch-maybe 1-1/4 long--new cheap motot has 3.2" shaft--reckon it can be cut off and drilled and tapped? --old one was keyed and had bolt in end of crank....gotta check-extra shaft length might not matter-might just be able to let it stick thru the plate....helps to think out loud sometimes.....