Please help me with my brake lines...

[Hazieview]

Well I ended up buying a willwood proportioning valve.

I'm having trouble mating up my stock brake lines with this aftermarket proportioning valve. The outlet of the stock proportioning valve going to the rear brake lines is a 1/4" line with a 9/16" fitting.

The Willwood proportioning valves are 3/8-24 with an SAE inverted flare for standard 3/16" (-3) brake line.

What I need is a 3/8-24 fitting that fits a 1/4" brake line or is there would it be easy to get a new brake line that hooks to the union going to the rear brake line?

Any help you can give me would be greatly appreciated. I'm stumped...