You can still get brand new rotors for the cars that had the 4.5 pattern cheap.
I would see what Tony has and maybe put new calipers and rotors on the factory parts, as I think it would be a lot less hassle for you, and cheaper.
LBP rotors brand new are about 50 a piece and calipers about 25 each.
That's only about 150 for both the 4.5 pattern rotors and both calipers.