This tank has two bolt-on type connections with two 3/8 NC threaded holes in each, five 3/8″ NPT flanges and one 3/4″ NPT flange facing the engine, a 1.75″ diameter hole on top for filler neck, a 3/8″ NC threaded hole on top next to the filler neck, three 1/4″ NC threaded holes in the tank on the front overhang, and two 1/4″ NC threaded nuts welded on the header on front and one facing the engine.
“