86 Turbo Z Tank hardware

Good afternoon,
I am in the process of replacing my rear brake lines in my 86 turbo z. Unfortunately, I have to drop the tank to get the old one removed and new installed. The bolts that hold the tank straps are not frozen, but quite rusty. One of them moves decent, the other I think might be starting to spin out in the frame. Does anyone know where I can get replacement bolts? Seems to me they are unavailable. I'm sure I could custom make something to work but maybe one of you has been down this road before.
Thanks,
Lee

I don't believe those pieces have been available for a very long time. If you pull up the seam sealer under the seat area where the bolts are, you can pry them out and make your own. I have also drilled my own hole and used some threaded rod to make a replacement. Good luck.