amaderasu asked for an update so here it is:
The neighbor sold the car and from what I head kept the tail. He ended up not liking the looks enough to keep the tail on when not commuting long distances and changed to a closer job so the tail just stayed off.
If there is interest I can try to swing by his house next time I am at my parents place and see if I can get a build pics or see if he will sell it......
In the attachment I added a rough sketch of a side view of the tail. Blue is structure. purple is straps running from inside side hooks to the tail and under to the tow points.
If someone really needs help making a copy I can try to guide them through it in person or on the phone or video chat... send me a PM. Others can attest I do not bite