That stuff would go good with my bell bottom pants!
I don't know if I'd bother with used carpet.
New stuff is sold by lots of vendors and made to fit your truck. Not to mention color choices.
Personally, I'd go with new stuff.
"If the women don't find you handsome, they should at least find you handy."
Red Green
The floor pan is the same to 79. The only difference you will find is a taller transmission tunnel on C6 auto and four speed equipped trucks. This is accomplished with a plate bolted on the tunnel to make more room for the bigger transmissions.