Registration and Posting Agreement
a 383 isn't bored .40 over. but that is nitpickin'.I'd go for the 2nd option. less money and you put together-- you'll know what ya got. The first one, with 5k miles, who knows why it is for sale now.
Can you drive motor #1 or at least hear it running? At the very least if you know of the vehicle it came from and saw it running at the local cruise-in or something then you have some comfort that it's running well. Motor #2 seems to have better parts in it but you have to get it worked on. If you don't mind the work and the time, then #2 might be the better deal.