273 and 360 interchangeability?

I promised more info today. Unfortunately I have not been able to reach the seller so far :(

Onto another question, if the 360 was hooked up to a manual 4 speed before going out for sale, will it work with my 727? If not, what would I need to make it work? Converter needs to be balanced? I think I've seen flexplates that could solve that, right? Is there a difference between the crank on a manual 360 engine and a automatic? So many questions...

Your 65 should have a 904 not a 727 unless it was changed, yes it will work with the 360. 273/318/340/360 are virtually identical from the outside and most stuff is interchangeable.