I got an email with some photos of that truck maybe 8 mos ago. I think it was for sale for around 6 or 8k. Very cool looking. I dont think the history goes back to the 60s or early 70s. The cage doesn't match the Stroppes, but it does look nicely done. By 74-75 many independents were nabbing up Broncos and making a go of desert racing and having some real fun!