shag carpet vans are still out there, but 3 years ago this was a cargo van, bought on craigslist for 10k

It was a good, solid, rust-free piece that had been a cargo van its whole life. 

Mopar's Direct Connection catalog of the era had page upon page devoted to van accessories including auxiliary lighting, windows, hatches, trim, fender flares, wheels, sidepipes, a free subscription to the Dodge Van Clan newsletter, and most importantly, a Street Van conversion kit

https://www.motortrend.com/features/1977-dodge-street-van-shaggin-wagon