Yes. That body style came with a big block version from the factory. Also, remember that your Nova, is the same as a 67, 68,and 69 camaro, which could end up saving you some money, as Camaro parts are more plentiful.
Yes.
i know for a fact big block Chevy gen vi 454
It will bolt in the same as any big block Chev
Yes.
NO it will not FIT.
NO. Not even close.
Yes.
YES it will fit right in, with a few mods. But it will never run. That engine requires an electric fuel pump and a computer system.
no it wont to small of a starter
Yes. A gto is pretty much the same chassis as a chevelle, which was available with a 396, which is the same size and weight as a 454.
No
If it is the same bodystyle, yes