New Chevy owner needs a little front disc break info/help!

[60stepside]

First just want to say hi everyone! What a great board and I can finally post! Well heres where I need a little help. I traded my old boat for a 1960 Stepside one of the very best trades I have done! ( I will upload picts later) Now I just need some info / help. The whole front end was rebuilt using a 1972 1/2 ton truck but it still has drums. I spoke to the previous owner and he said all I would have to do is get the spindles for disc breaks and then the calipers and rotors, but he wasn't too sure what year I would need to get for the 6 lug rotors ( I love the rims). Brake booster, master and prop valve was also used from the 72. So if anyone could help me it would be extremly appreciated!