It looks like an older Barrian sand rail. I would say prob. a Barrion 902 short back. The rail frame had no stamped numbers of ID. If it has a VW tag in the rear end (behind the driver, infront of the tire) it had probably been made street legal at 1 time (My barrion is titled as a 74 superbettle LOL). The "bug cooler" sticker is prob a "Bug Pac" sticker, bugpac is a huge VW aftermarket company. The pictures are prety bad, but it looks like it had a IRS rearend, I can also see that the front beam is missing. W/ better pictures I could tell you more.
MIK6 / Mike
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