After 1969, for sure. I was looking at a rust-bucket 69 late last week, thinking I'd make a trail rig out of it, or perhaps a partial resto for my son. Had three-on-the-tree that looked original.
Anyway, after looking, and noting there had been some chopping on the body ("all original, not messed with"), lots of missing small bits, a total FUBAR of the front bumper, etc., I was ready to offer $850, up to $1200 if it ran well.
Just about fell out of my ass (see avatar

when the owner stated "$8000, firm."
Reality check, aisle five!
I gently told him "no, thanks," left him my offer on the back of my business card, and suggested he take a gander at what similar rigs on
eBay go for.
Kirk