Your going to struggle to sell here.

Its a million miles away from being usable. Half the bodywork missing, no engine and I presume the new owner will have to get it mapped. The new kit looks god awful (IMO), so the new owner will have to spend a fair penny to put that right.

Finally it begs the question, why don't you put it back together? Either there is a hidden problem, or more likely it will cost a bomb.

Your power claims seem very fanciful. Would you sell on a proviso that if it doesn't make 640bhp the new owner can have some money back?

Good luck with the sale, but you really should make it complete to make that kind of money you want