Disk Brake Question

Good afternoon everyone, I was curious if anyone had experience with this kit-

1966-74 Dodge Dart Mopar A-Body Front Disc Brake Conversion Kit for 5x4.5 Bolt Pattern & Manual Brakes

Seems alright, but didn't know if they were all 1 off parts that I wouldn't be able to get my hands on at my local parts store or if they were OEA Parts. Just don't want to eventually have a stuck/leaking caliper and have to only be able to deal with Pirate Jack. This kit would be going on to a 1970 dart swinger.

PS- I'm new to all of this, so if i left anything out let me know. Thank you!