Hi Richard, imho the easiest and most practical since u mentioned being matured a couple times lol, join the club, is sell it as it sits with the original engine and trans. Let someone else go thru rebuilding cost and time to change over BUT you need to complete some investigation work to fully show what other important components car was born with. The original alternator, carb, and distributor can have a huge impact on value so complete that investigation work and prepare a worthwhile for sale ad. If u need any help send me a pm and will help with your date codes etc.. Good luck and welcome aboard....