just ordered my frt disc brakes

You should have 10" drums on that car. V8 cars normally have the larger drums. This upgrade can still be done, it's just easier and the brackets are cheaper by $10.

As far as the re-drilling the rotors goes, you will recieve a template so that you get it right. I would reccomend that you have a machine shop do it though. They will have the right bit, a good drill press, and they have the abbility to get the holes centered exactly. Mark at Scarebird had a set of rotors and he drilled them for me when I bought the Brackets.

I can do this too. Just let me know and we can get you a salvage yard set or a new set.