I weld in a new hand formed floor pan in my 1978 Ford F150 truck.
Rust converter paint: https://amzn.to/2IP7EID
Auto body hammers(basic entry level): https://amzn.to/2J2ijmF
Auto body hammers(mid level quality): https://amzn.to/2J5muhx
Fitting and welding in new floor pans.
I guesstimate it took me 20 minutes longer to make this panel vs fitting a flimsy Chinese floor pan. I used 18 gauge steel.
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