NO LONGER AVAILABLE
I've just picked this tank up. I'm not really sure if I'll need a spare tank; I bought it on an impulse. If you want it you can have it for what I paid for it, £90. The tank is located in the UK West Midlands. Any questions or more pictures, just ask. I tested the tank with a magnet looking for bondo/filler; seems to be all good.
https://drive.google.com/drive/folders/11mmW4Ax3wuJjMyvVMDS6jyU9D-Bq5QYp?usp=sharing