Line lock installation

Hello

I'm new to the site and recently purchased a 1972 Demon. The car already had Wilwood disc brakes in the front. I changed the rear drum brakes to Wilwood disc brakes and while I had the brake system disassembled, I decided to install a line-lock and an adjustable proportioning valve.

I found a few good posts about installing a line-lock, but didn't find an answer to the issue I'm having and was hoping someone would havesome ideas. I'm installing the line-lock in the front brake circuit. I want to install it after the pressure differential valve so the warning lamp will still operate correctly. While disconnecting the front brake lines from the pressure differential valve I noticed that the fittings were larger than the rear fitting but all of the lines are 3/16. I assume that was designed that way to prevent someone from installing the valve incorrectly. The pictures attached below show the valve I have and the method of connecting the line lock. The problem I'm have is finding a way to tee the two existing front brake lines to the line lock. The only tees that I could fine are 3/16 or 1/4 flare. The 3/16 tee has the correct flare but the fitting on the line is larger than the threaded hole. The 1/4 tee will accommodate the fitting but the flare does not seat well on the flare in the tee.

I know the obvious answer is to cut off the fittings and replace them with the standard fittings for 3/16 line, but with the headers and torsion bar there is not much room and I'm trying to avoid replacing the right front line since it is routed behind the engine and difficult to get to.

The only other idea I had was to get a second pressure differential valve and remove the stem valve and cut the top half off and drill/tap the hole where the valve was located.

I'm open to any ideas that will make the install easier.

Thanks in advance and any help is appreciated!