[Rachelsdad]

Indeed, Ed; great guidance - and with pics!

As for seam sealer, I would probably recommend something from Eastwood. They seem (no pun intended) to have a decent selection, from brushables to caulking gun formulations, and even in black vs white (I know that this doesn't make a difference in your immediate case, but you might make use of it elsewhere, such as where I did, on the engine side of the firewall or around the trunk gutter).

Hope this helps, too.