i was on my way to dallas when my crankshaft locked up 2 months ago. went into a depression spell. had to register my shitbox chevy as a result just to have a ride. im just looking for opinions. i can try to rebuild the engine for 1k+ in tools and a new crankshaft or buy a used craigslist engine for 500+. but i heard the cbr300r had the same frame. so maybe i could get a tiny cc bump with the extra cost of engine + mounting brackets + exhaust + ecu. not sure if the pins on the wiring harness are different.