recommendations for paint/sealing of the bottom of the unibody?

Looking for recommendations (prefer personal experience) of what to paint or seal up the bottom of my Demon's unibody/chassis. I will be starting the process of blasting the underside and adding some structural support here in the next week or so but what is everybody using on the bottom of their car? It will be mounted on a rotisserie and blasted to bare metal. I've been out of this body/paint game for a few decades and would like to know what options are currently out there. I am thinking some DP-40 and then simple gray enamel paint, or possibly Lizard skin or truck bedliner. This is a driver car and I'm not planning on finish painting the bottom to look as shiny as the top, just looking for long term protection and a neat appearance.
Thanks for you opinions!
Scott
Scott, A couple of thoughts you might want to consider. I just got my Dart out of media blast and into body & paint. The media blast people epoxy power primer coat sealed the inside and bottom of the car. I'm going to Lizard skin the bottom and inside, heat reflecting on the bottom and sound proofing on the inside. A little overkill but I won the Lizardskin at the Good Guys P-Town show. I've used Lizardskin in the past and it has worked well for me.
I attached a picture of the epoxy primer sealer in the Dart.

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