Crf to klx top end conversion

[Fist]

I have a yx 150 crf type, I was wondering if you could change the cylinder to a 67 mm big bore one (klx type) and a tb race head v2 (klx type). is it possible to Change topend style like that? or do i have to use crf ones. my plan is to add those 2 parts and a vm 30 mikuni carb. as you see on the pictures below the engine cases look very similar, therefore i think it would work. but i really dont know.