No problem, even on a stock build where performance isn't as important as reliability, replacing the wrist pin, crank, and clutch bearings with quality units will definitely extend the life of these engines. I know my first teardown of one with maybe a few hours of runtime showed no problems with the cylinder, piston, head, or any of the rotating assembly, but the clutch bearings were already rough spinning and one of the crank bearings was already loose. The wrist pin was still good but being too narrow I changed it out too.
No telling how long that engine would have run like that, but good bearings are cheap insurance.