I will be picking up a 100 soon with possible engine problems. I think the 8 hp B & S engines were used on lots of mowers, only for JD they had a particular type of end on the crankshaft for the clutch. This is a little out of the scope of this forum, but would the engine out of an R72 be able to be transplanted in a 100? I know this is a later (80's) rider but they did have a B & S engine. Thanks for the help.