I had the option to upgrade it but my plan has been to go as original as possible. It even has L2B bench with no armrest and fixed position rear seat. Notice the rear speaker control?
My dad purchased a brand new 1969 A56 optioned cuda 340 4 speed Fastback B5/B5 3:23 SG right off the truck with the same bench seat with headrests, no armrest, fixed back seat and rear window defroster.