POR15, undercoat, or sprayon bedliner?

rapidtransitric said

chassis black is what gm's used show me how well that worked i don't know of any gm guy that hasn't layed awake at night listening to his car rust

undercoating does not have to be clumpy and it doesn't have to be put on heavy that's just the mantallity of the people hired to be a rustproof junkie it's called "i'm just putting in my time," or "what do you expect for what they pay me"

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RiceNuker: The Chassis Black I refer to is just the Eastwood Chassis Black paint... look it up on their website. Maybe it doesn't need to be the Eastwood, I'm just going based on a recommendation. I have no idea. I'm still going to use the rust encapsulator on the sandblasted underbody though.

Rapidtransitric: Maybe I missed it, and I apologize if so, but what, specifically, do you recommend for each area? Underbody, wheel wells/inner fenders/insides of fenders, and the topsides of floor pans, specifically?

We've had quite a few recommendations so far, and maybe I'm just misunderstanding, but it seems to me like you're saying they're all bad. So... what are your recommendations for finishes in those areas? Just undercoating? Or epoxy primer, then what? (The Eastwood chassis black is just paint... so if paint, what sort of paint?)... ??? Thanks!