My Survivor 1972 D100 is on Craigslist in TX

Your ad is too wordy. JMHO
Instead of mentioning things like:
the old rusty tailpipe, simply say new tailpipe
the rear bumper story, simply say spare bumper if you want it.
replaced all the interior parts, just say it is all there and in good condition, the question that would come to my mind is why did you have to replace all that stuff.

BTW, nice truck, good luck with the sale.