I am trying to get an mc16 ready for forgotten era racing next season so am upgrading it in preperation.
The RD350 engine may go in. I have both an rd350 engine and mc16 chassis so could measure the differences between them if needed.
As for upgrades, well later nsr stuff is a good start, mc18/21/28 forks and wheel/brakes go in. as do later swingarms (well 18/21) and wheel combo's fit!
Petrol tanks.. mc16's fit.. mc18's fit with a little modifying. That I know from experience.
If you do break the bike, I'd be interested in a few bits, but if you continue on the project then it would be interesting to see!
Paul
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More **** two strokes than you can shake a **** stick at.