My tank switching valve got all gunked-up. So, I want to just put two mechanical valves on by the drivers seat. Has anyone done this? And do you know where to get the two valves I'm looking for? Heavy equip. or marine place?

 

Here is one for a GMC may work?

http://www.americanclassic.com/Googl...TN-37-1969.htm

If you have an EFI engine then you will need 2.

I replaced the OEM valve with an after market electric switching valve.
See link in my signature.