no fittings, just literally stuck the two copper tubes (small flexible stuff) into the two relief ports. one was 5/16" and the other was like 1/8". and they stay in there by friction, and a little bit of bend in the tubing that i stick in there. sometimes if i wiggle them, they fall out. It is a 9.9 mercury for reference.
the tubes first come out of the motor pointing down, then gooseneck up and over to the stbd fwd corner of the laz, where the vent port is.
and the copper tubing is stiff enough to stay in position, but you can bend it as needed.
but yes, it gets really hot. i would say like as hot a really hot tap water.