273, or 318?

This is a numbers matching car, as I said earlier, he would be money ahead by rebuilding the 273. Originality is always worth more money.
Not necessarily. If it's an original 273-2 it isn't special. Unless he puts a 340 in it! And he's adding a a-500 so it ain't original. I couldn't help myself for not being gammarly correct. lol.