I got a used '87 w/ a poor fitting air filter. The motor was tired and hammering on it the first time I had it out at glamis, it dropped a piston skirt. 

Not wanting to relive that I had the engine gone thru. Fresh crank/brgs/seals/oem rod kit w/ welded pin, 87mm Wiseco piston windowed, powerhead w/ squish modified, ported cyl, 41pwk & stock reeds for now. Been babying it until today. Neighbors were cool no  thank you