03-05 head on a 2006?

hey guys been a while since im on here but I was just wondering if a 03 to 05 head will work on a 2006 yz 450. I no the exhaust is different but that's not a big deal.   so can you interchange these? or would you need to swap out the cylinder too?

thanks guys

Nope. Starting with '06, the top end oiling was moved from the external oil manifold the '03-'05 used to internal passages. The older head does not have these, and won't work, even if it bolts on.

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