Brake Line fitting thread size

Does any body know what the thread size is for the front brake line fittings that go into the distribution block on a 68 Barracuda? I am trying to install a line lock and the kit came with a brass "T" fitting but the fittings on the brake lines are larger than the threads inn the "T" fitting. None of the adapters in the kit fit. I need to buy some adapter fittings but don't know what size to buy.

Thanks

Sounds like you need a fitting reducer(maybe 1/4 female to a 1/8 male).check with your local hardware store.