Are you going to do the cab floor too? If you really like this truck, it's be a good idea for rust prevention incase water ever gets under the carpet or vinyl- whatever floor covering you use. Take it a few inches up the sides. I would probably even try to do inside the doors; s series despit the drain holes are notorious for rusting when water gets inside the doors and doesn't drain properly. It's goos to waterproof as much as you can, especially anywhere water can get, like the cowl.
I like both of these projects, I miss my s10 blazer, even more since it was my stepdads and he died last year.
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