Drove around for near half a year with nothing but sheet metal interior :-)
Found some old door panels in my junk heap and painted them with some vinyl dye. Looked pretty good.
Got tired of the crappy Ford power steering of the era. I'd rebuilt most of it, and it would still be kinda vague at 65mph. Converted it to manual steering and haven't been happier with it. Still need to rebuild the front end (got the parts, just not the time).
Saw a sale at Mac's Auto and figured summer was here, it'd be nice to not have so much heat and road/gear noise in the car.
I wasn't starting with anything really all that bad, so I'd say the whole project took maybe 6 hours, the rest of the time was people annoying me in my shop and waiting for things to dry. I did the project over a 2 day period.
Floor was in primer, tho some surface rust, It was all sanded, cleaned, and treated with phosphoric acid.
I then washed, recleaned, and primered the few rust spots. After that I used a spray on sound deadener called "boom mat" This served my need for not only some sound killing, but also doubled as my paint top coat. I did not really feel this spray on sound deadener was needed... But simply put, I didn't feel like taking the interior out again this decade.
The little "kit" I got from Mac's was called Acousti-shield. It came with heat mat and Dynamat strips. I guess the idea behind the strips is to just kill drumming type noise in longer flat sheet metal.
Heat Insulation test fit, cut as needed, glued and taped up.