What a dilemma!

Not a chance. Demons "rock". I drove ( 24 hours each way )from Perth Ontario to Miami Florida to trailer back my 1971 demon. I bought it from a guy on ebag. Besides, 340's are not that big of a deal anyways. An original H-code car may be worth more in the long run but only if restored back to original. Have fun with your demon the way it is and if you get tired, stuff a big block in it.

kenny b