KX 80 Questions (100 Topend on 80 bottom)

[Boxing]

Hi all.

Just wondering, can I put a 100CC topend on a 80's bottom end?

What sort of things will have to be done if I did this?

Will everything from the 80 still work fine, like the carb without messing with jetting?

I know piston would need changing. Anything else?

[Boxing]

Well the exhaust will have to be changed around, I have the 100's exhaust, but sadly it doesn't align up with the 80's frame.

Only the spring location seems to be different on the 100's topend.

I'll pull the carbs apart later and see if they're both running at the same jetting. If not I'll just whack the 100's carb on.