John - If your looking for a less expensive solution, something like this small bench seat cover (screenshot below) might be worth checking out. I've been running something similar on my tired old '51's seat for years. Looks like it would fit with your trucks appearance and protect your back and nether regions.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
