New Project: 1974 2WD Shortbed

[Shady Chevy]

Ok, now for technical questions for anyone whom may know: I want to put different brake rotors on on this truck (1974) that will have a 4 3/4 inch bolt pattern instead of the stock 5 inch pattern. So I saw today that "Maxxxy" had posted about putting 1991 Camaro 1LE "performance package" rotors on his 1981 2WD. The NAPA part number for this 1LE rotor should be PN-NB 4885994. NAPA price? (closed right now) A&A price is $94.23 each. My first question revolves around whether a 1974 1/2 ton 2WD spindle is the same or different than the 1981 1/2 ton 2WD spindle? (what "Maxxxy" is putting these rotors on) Can I use my stock calipers, pads and bearings?

Here is a link to a post that I was reading, that had some good info on the 1LE brake package swap. (On an older Camaro not a truck)
http://www.nastyz28.com/forum/showthread.php?t=182800