Where to find the right master cylinder adapters?

Converting my 65 Dart to front discs. Went with the Dorman M80266 Master cylinder. I have everything in place but can't find the right adapters. Want to connect the stock line to the rear (disc) outlet on the MC and a new 3/16th line from the front (drum) outlet to the prop valve. I've been to 3 different auto parts stores and nobody has the right brass adapters.