Yes. I think that Hooker headers makes a kit with moun ts, headers, and frame reinforcements.
yes it can
Yes. You could get them from the factory with them.
Yes.
Money is the limit. IF the engine didn't happen to fit, you could have the engine compartment modified. A big block should swap right in with no issues... wiring, transmission, etc is a different story, but a big block will fit.
Yes it will fit. This distributor will fit all small block and big block Chevrolet engines.
Yes there is room for it to fit.
No.
Yes it can, you will also need the big block pickup tube
Yes it will, it is the same bolt pattern.
Yes.
Yes.
no because the 2003 is bigger you wouuld have to cut it to get it to fit