Bama, it's 5/16 steel brake line with a compression fitting. Just make sure you get a straight threaded fitting, otherwise it won't screw into the motor. Was about 5 bucks at NAPA.

But I just talked to a YS rep and he said to make something as long as I did, he would suggest 3/8 or even 1/2 inch line, so I might need to figure out how to do that.

DT