someotherguy
+1y
Air injection setup for the smog pump. I forget all the possible designs but some have a small port at the top of each tube that can be plugged. Not sure what dual air fittings means but it's going to be related to that setup. They have to have that provision for them to be sold as smog legal. Might be a design that has a large port and maybe an O2 sensor port, dunno, ask them for pictures. For that much cash they better send you an 8x10 glossy of them...
Richard