just finished putting together my Passion Racing 12 port 4mm LR stroker an hour ago! Cannot wait to fire it up Maybe 75 is HP. In addition to to that engine work, it has T5s, ported cages, matched case, coolhead w/ special cut noss 21cc domes, lightened flywheel, timing advance, and little 28mm mikunis. I also got RZ shift forks and drum and cut tranny gears along with a modded shift star...its gonna rip