What size plug? Throttle body coolant hose to head on an m50

[THEhomelessONE]

Hose just burst after throwing in some 19#ers, car runs stronger with the 19lb injectors too. What thread pitch and size do I need to plug the coolant exit on the head to the TB? I think it's been leaking for a while actually but replaced the radiator since it was leaky too. What kind of plug should I use for the spider hose? Please, no butt plug puns lol thanks for any help!

[THEhomelessONE]

Just ended up connecting the hoses. You need to use a 3/8" barb, recommend one with a 90 degree angle. Still wondering what size plug to use for the head though, one less hose to worry about.