New tank, Clean tank, or Fuel Cell?

I would put a new tank in a ride that looks that nice. I purchased one off ebay
a couple years ago for $130.00 sending unit was $49.00 plus shipping. I had a dash 6 aeroquip bong welded in the bottom then drilled it to 3/8 to pick up the fuel using braided steel lines to the filter. I haven't finished this project yet but when I do I will post pics.