I be the grandfather I reckon. That van has long taillights so 72 or newer. I had a 1960 VW, a 1972 VW campmobile new, a 1963 Ford window van, an 1984 diesel high top GMC conversion and a 1978 Ford E350 with a 460.
My first "B" literally was an old bread truck. Boxy, tons of room and I had built a small waterbed in it at one point. That thing was down right scary, the doors kept rolling back when going down the road, and after a friend talked me into taking his engine from a wrecked Chevelle (Modified 327) and installing it, we couldn't keep the cops away.