I have had the car in storage for a few years and the tank is rotted out. I will be replacing the tank and wanted to get some tips/input. Looking at getting a tank from Rock Auto, which sounds like are the good Spectra tanks. Tank comes with a lock ring kit.

While i'm doing this is there any other parts i should be replacing? (everything is original). Sending unit seems fine as the gauge reads accurate. Any other seals/gaskets i need to pick up? Fuel lines??

Also, the car has the factory undercoating on the current tank. Whats the best way to replicate this? Any input would be appreciated. Thanks