I'm just finished the disc brake swap on my '66 Wagon as we speak... well, after 8hrs work, I took off for the night.
As far as the install:
1. First, I bought the whole 2" Drop setup from Chevy2Only, BUT it is the CPP kit. I used Chevy2 because they sell CPP kits specific to our cars. If you go through CPP, you have to match it all correctly.
2. The Kit came complete. I even asked Junior at the time I bought it if I need anything else. He assured me 1000 times that I didn't, and he was right. It came with the booster/MC already attached. The spindles, calipers, bearings, brake line to the caliper was already assembled. I did not have to do anything. I ordered the Stainless Steel line set for double the price, but well worth it. My old lines looked terrible, even after cleaning them up.
3. I'd say it took me about 4hrs to do both sides. Total breakdown from the old drums, taking the springs out PAINTING everything including the springs, perches and top srping cup. I also bought the CPP upper control arms. Same thing, bolted right on. They came with the upper ball joints already in place.
4. Now I am routing the lines. It is challenging only beacuse I am using SS lines. But other than that, it's very straight forward. As the member stated above, there is a plug attached to the M/C distribution block that goes in the passenger side fender-wall port to block off the old single line to the rear.
Really, I moved alone very quickly... and I am a slow-poke. I take breaks, stare at the car, day-dream for a few minuets... you know.. the usual, and I found it to be piss-easy!
The only hard part is that the disc brake assemblies are VERY heavy out of the box, so when you go to bolt them on you have to be very careful. I wedge my knee under it and used it as a jack/brace to hold the unit while I bolted on the top ball-joint.
I never tried to use any other place other than Chevy2Only. I find they are VERY good, helpful and really, they are Nova's only. Not some guy that is building 100 cars a week of all different makes.
Just my opinion, don't take it for anything more that what it is, but I found the CPP kit bought from C2O was a total breeze. I now have the whole front end kit including upper, lower and the brakes by CPP, and I'm very satisfied.
All the best,
DW