Gas tank??

[Luba]

UPDATE: I finally got tank sealed up. PO had a couple of patches in there, and one was leaking. I ended up ordering a quart of POR-15's fuel tank sealer. I already have used their paint and I had some of the prep stuff left over. It cost me about $39 shipped for it. It is way better than the $385 the other place wanted to try to seal it. Anyways still letting it dry but I am fairly sure she is good. I coated it both inside and outside and then primed and painted it. Now I am just curious if I can plug 2 of the 5 openings or vents. I just plan to hook up the 2 to the fill hole and one for the fuel sender. The other 2 small side vents I just plan to plug. I am not running the emission crap. Do you think that will be al right? I also assume the 2 vents are the 2 small fittings up top one on each side.