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Rm125 cylinder head advice

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Hi there. I need a new head for my 2004 rm125. Other than expensive aftermarket heads the only one I can find is off a 2005 bike. Will this fit? I need a new piston too so maybe I would need to buy a 2005 piston?? I've looked into the part numbers and from what I can see 01-03 are the same and 05-11 are the same, but 04 is unique. I just need some expert advice from you good people letting me know if I can go ahead with the 05, and if I would then need an 05 piston? Thankyou! :bonk:

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What's a phathead?

Aftermarket head with replacable/adjustable domes to change compression and therefore, enhance performance.

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my buddy put one on his yz250 they look fresh and its not bad in price especially coming with a stock dome and higher comp dome....def worth the money imma get one if my head is pitted when i rebuild....plus his bike ran cooler in the dunes than mine he didnt have any antifreeze overflow

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