Body/paint floor questions

Thanks for reply, I cant remember if its plug welded from top side. Should it be? Also, I would imagine seam sealer on both sides of seam?
I was worried that I may have to take it all down to bare metal before priming.
No more $$ to sink into it, so I gotta learn to finish it.(never welded or painted before)
Thanks again.

Demonic said

IIRC, that seem is spot welded from the factory. Did it get plug welded from the other side? There's some gaps that are a little big, but otherwise it looks similar to factory. The EDP coating should be scuffed with Scotch Brite or sandpaper before undercoating or sealing.

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