Can I use my 8hp head, flywheel on a 10hp

#1
So I can get a NEW 10hp shortblock for $150. The crank is wrong (Tapered down to 7/8") but a machinist friend of mine said he can (and has) turned down cranks (I need 3/4") and machine in the keyway. So that is good but will the head, flywheel, electronics ect swap from the my 8 to the 10hp??
 
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