best 5x4.5 disc conversion on my 1968 dart 2dr post

i want 5x4.5 bolt pattern,just want a kit that has everything in a box

Dr diff can set that up for you. His stage 1 kit will have everything you need, you can even add on the master cylinder, prop valve, etc. And if you aren't sure what you need, you can just call Cass @DoctorDiff, he can help you build a kit that will have everything.

I put SSBC kits on front and rear. Used Dr. Diff big bolt pattern axles in the rear. SSBC has nice stuff, but it might be a little more $$$. Your choice of drilled, slotted, plated rotors. And red or black powdercoated calipers if you want. That's a plus... no rusty old iron stuff. The calipers & pads are from late Mustang and/or T-Bird. (They actually tell you this in the instructions). Get the smallest bore M/C you can find and you won't even need power brakes. Mine work great without a proportioning valve too.

You can drilled, slotted, plated rotors and powder coated calipers from Dr diff. My rotors from him are drilled slotted and plated. Calipers are powder coated.

I'm not knocking the SSBC kits, I know they work. But I don't see any great advantage they offer over using the '73 up disks. They cost more money, but you don't get spindles. And you have to drill your drum brake spindles to fit the caliper brackets. They use a 4 piston caliper, but it's an older design KH style caliper. Rotors come from them and can only be purchased from them or large places like Summit etc. Probably not going to find those locally in most places. And maybe that's not a huge deal for a weekend car, but for a daily driver it's nice to be able to get most of your parts locally if necessary, and you can usually do that if you use the 73+ 10.95" or 11.75" rotors.