Looks like a fun project and you have the perfect base truck. The right year (range), short bed and even the 5-lug axles.
My one suggestion would be to not over-restore it. You could take out all the dents, sandblast it, then do a nice shiny basecoat/clearcoat red and end up with something that doesn't look like it fits in the movie at all.
"I pursued my enemies and overtook them;
I did not turn back till they were destroyed."
Username: Jon (Jun. 28, 1999 - Oct. 17 1999)
Username: JtB (Oct. 17, 1999 - Mar. 31, 2000)
Username: PursuitSpecial (Mar. 31, 2000 - present)