Can i swap a yz450 cylinder head with mine?

I have a 98' yz400f and the head is no good on it and i was wondering if it were possible to just buy a cylinder, cyl. head, and piston with rod and rings.....because i was thinking about doing that anyway if i could :p...i like having 5 gears.....thx for your time.

Nope.

What about the 426 head?....its like 100 bucks cheaper then a 98 400 cyl head.....could i just use the 426 head with my piston and cylinder?i know i can use it if i change all of that...but this would be more economical....thx for your time.

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