[66-PMD-GMC]

Originally Posted by Captainfab

If you are using 1/8" thick metal sheet for a floor, you will need something like 5/8" square tube to make up the difference between the new 1/8" floor and the original 3/4" wood floor.

Cool beans Cap..fab,
I am using a stock, clean floor from a 67 LWB truck chevy.
The sheet metal is certainly not 1/4" (.250) and looks more like 1/8th" but I haven't put a set of micrometers on it to check yet.
From previous posts around this site, 1/2"has been the suggested spacer so hence my question. Thanks for the heads up.
I was going to put a 96 sport bed on my short bed 63 but I found a shorty fleetside so I am doing my first steel floor on my LWB 66 and then I'll move on to the 63.
I am also looking for a lightweight rust proof coating for the underside of the bed as well. not that AZ is near the rust belt...