I have a late 70's enticer 300 and i was wondering if i could drop in a late 70's 340 motor? Id like to keep it as stock as possible but want to put in a better running motor that i already have.

the motor should bolt right on, my buddy did that to his last year that thing went like stink
but what he had to do was put the 300 magneto in the 340 because the wiring was still off of the 300 then it ran fine