I bought all the components from Summit Racing. Let me see if I can dig through invoices (couples years ago now) and see what sizes the fittings were I used. Basically you will need:
2 - Solenoids
2 - Short SS jumper brake lines (from factory hard line to solenoid)
2 - Factory hard line to jumper line adapter fittings
2 - Jumper line to solenoid fittings
2 - Solenoid to factory (or in my case SS) brake lines
1 - Arming switch
Wire, wire terminals and misc hardware to mount the solenoids.