55 2nd disc brakes

[hb32]

Not very computer savvy when it comes to searching this forum but looking for tech info on installing front discs on my 55 3100. I have already swapped the bearings to tapered rollers and will keep the 6 lug pattern.
1. I have seen the kits and am wondering, is there a way to do this thru my local supplier with over the counter parts besides the brackets ?
2. I suspect that I will need to replace the original master with a dual and will I also need a proportioning valve and where does it go ?
3. Is it a simple bolt on or is there elaborate machining that is left out in the general disclaimer?
Thanks in advance for the responses.