[Erics51chevy]

i think brake lines are pretty simple if you plan everything out and use common sense. A good flare tool is priceless. But if your only using it for one project i would rent it no doubt. Remember brake lines are double flared. You can watch youtube videos all day on double flaring brake lines and be an expert. Buy all the neccesary nuts and a 25' roll of brake line and go to town. Follow the original brake line pathing and practice a couple times before you do it. Lastly, it may say dumb but anyone who says they never forgot to put the nut on before they flared the end of the brake line is a liar!

Sorry, cant help on the brake prop valve. But from what ive read if using disc/drum combo you need it. Ive also picked up 2 residual pressure valves that keep slight pressure on your brake so you dont have to push all the way to the floor to get the truck to brake. 2 pound residual for disc brakes, 10 pounds for drum brakes.