------Dave,,,I would still put together a stout 383 and store your original. What happens when you build up the numbers match motor and then puke it??? As well, after your time is up with the Vette you can reinstall your original and go for the bucks with a fresh detail, all the while still having the 383 sitting around for another project or for sale. I dont know,,,It seems like a win-win to me.
.......Bill S