can you clean a fuel tank?

Honestly,I cant believe that is a wholesale price.No offence intended,but I had a 1983 Plymouth V8 fury cop car about 10 years ago. I put a brand new gas tank in it for $140 CDN. And yes it was Spectra.Price can't have increased that much in so short of a time. I did find this in a quick search.

Fuel System - Gas Tanks

I have ordered from these guys before,but I ordered 1/4 panels through Summit racing.com,because their price was lower than AMD's ,and there was a free shipping deal on. I live 15 minutes from the border,so was able to ship to a drop point just across the line.
Speaking of summit racing...

Yes they also have gas tanks.
https://www.summitracing.com

There is also this place for online parts,and it is in Canada. I have also bought from these guys. Their patch panels look like a monkey made them,but other stuff has been fine.

Cross Canada Collision Parts Specialists - Home