That’s a late 60’s or early 70’s model. Looks like it has the big rear window. The 68 had the small one.
The earlier 60’s Chevys also had rear coil springs.
Back in 69 I was working at the same Summer retreat and owned an English Ford. Two guys I knew pretty well were driving that pickup, I am pretty sure that is the same one. They were using it to haul linen to and from a nearby laundry.
For some reason I thought I might be able to beat it as the Cortina ran pretty well. Bad idea, they beat me easily.
I got a 79 chevy pick-up. It’s a 5.7 ltr engine. What I like about it is, for inspection I don’t need emissions so inspect is $15 for a safety check where they usually just check the lights if that and slap a sticker on. Sure it’s a gas gussler but runs like a champ. What I also like about it is, there’s almost nothing under the hood to breakdown. I bought it 10 years ago at a school district auction for $500.