03 yz450f in drag atv

I recently put an 03 4 speed yz450f engine in an 87 kawasaki tecate 4 atv frame with a lot of frame work. Ill be drag racing it and I'm looking for information on stroking and big bore kits. I'm coming from the 2 stroke end of things and I guess its just time to try something new.

Thanks for any and all help

I'm thinking of purchasing the Ice cube 511 kit. If anyone has any experience or opinions on them I'd like to hear it.

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