4 wheel disc swap upgrade questions

I’m looking into upgrading to 4 wheel disc brakes on my 66 CJ5, I’ve read the tech pages on here and some threads on it. I’ve came across a few ideas, some possible conflicting information, and some more questions I cant find answers to. I hope someone here will know and can help me figure it all out. Maybe it’ll help other members as well.

First, I’m looking at the disc swap page on here(http://www.earlycj5.com/tech/brakes/diskSwap/disc_conversion.php). It is for a D25. I have a D30 I want to install at the same time – it has drums. But, I’m thinking it’s the same deal ? Looks like I can use Chevy ½ ton caliper mounts, calipers, and I must use the 1 1/8” thick rotor from a cj5 ? I’ve looked at prices for these rotors.. and the newer rotors off the 78 cj5’s are much cheaper ! I went though Chuck’s disc swap page at oldjeep.com(http://oldjeep.com/disc.htm) and he says he used 78 rotors ? I looked at autozone.com’s website, and they show rotors for 6 bolt and 2 bolt mounting calipers ? why are there 2 different ones, were there different d30's ? In addition to this – I was reading on one of the threads here, a member said he installed the thinner disc rotors in the rear with chevy s10 calipers. If this will work, a disc brake conversion can be done for pretty cheap ! Ideally I would use all same parts for front and rear disc swap.

 

you will need to swap out the master cylinder for one set up for 4 wheel discs - I used one from a 79 Firebird with 4 wheel discs with my overhead pedal set-up