B body tank in A body

Ok so got the tank welded back up....It aint pretty, but except for a few pinholes.....she is a runner! So my question to the tank seal m up gurus is........Out of all the products out there that seal gas tanks, which is the most recommended for clean , never been run, no rust tank? Por 15? the eastwood sealer? northern fuel tank liner? probably need to put some etcher in there. This is an EFI tank if it matters.

Thanks in advance, I have never used tank sealer before.