Alright well after confirming today I indeed have a 410cc and a 340cc motor.
Curious to know all the differences in the motors. could it be that the 340 head could have a smaller combustion chamber and by using it on the 410 I could achieve a higher compression ratio thus more power.
or perhaps the 410 should go onto the 340 and drop the compression and slap the turbo on it if I could ever find out the way to turbo a 2stroke.