I just bought a "Shift Right" trans-brake from Century Trans. (PMAC). I believe Ron Joseph sells the "Day Brake". My brother had a Stage Right, by Mallender. I don't think they are around any more. The number no longer works for them. The Century and the Mallender are identical in installation procedure. these are all manual shift brakes. See other post for pro's and con's that were voiced.
Get you're line lock from Jegs or Summit. Which one depends on how good you are with wiring and pipe bending.