Handy Andy,
My seat cover is the Spanish Grain Maroon Kit from Jim Carter. Here is a partial list of my interior materials & sources:
Jim Carter /oldchevytrucks.com.
Seat cover Spanish Grain Maroon #UP109.
Vinyl for door panels #UP215V (same material & color as seat cover)
Classic Parts Of America
Arm rests maroon #19-623
Headliner Brown #21-402
Sunvisors Brown #25-402
Foam was purchased from local sewing (Hancock) goods shop.
Seat cover was stretched and attached with "hog rings"
I used 3M spray adhesive to attach vinyl #UP215V over a set of standard cardboard door panels.