Let me correct you. You don't have utility buckets, that is a later seat. '73-up brackets are taller.
There were three K/5 seats:
Standard- Utility buckets, and the passenger bucket is an option.
Optional- Bucket seats only, no console. The upholstery resembles basket weave, IIRC. Similar to the bench
CST- Scroll pattern w/console.
K/5 seats are same upholstery as all 10-30s. trucks no back, Suburban and K/5 have plastic backs
Utility buckets have steel backs. Available in K/5 standard, Panel Truck (all), and I believe we have had a rare Suburban or two here. I never thought Suburban. If no one else remembers or has one, I was right.
Panel Truck had one seat standard (driver side
), second seat optional.
On Panels with standard single seat floor has no provision for outer seat bracket mounting