I bought both mine from CPP. Their customer support was great. Make sure when you are buying the 2 kits you let them know they are both going on the same truck and that you want the proportioning valve for 4 wheel disc brakes - its different than the standard one that comes in the kit. Also you can upgrade to chrome on the MC, power unit, and Porp Valve if you are dressing up your truck.
I wasn't impressed with their brack lines so I purchased them from a local parts store. Everything else was top shelf.
