Yes there is an electric fuel manifold that I have used on the Osprey, Orca and SeaSport lines from IMCO called the "Super Fuel Valve", the part number is SF-206. IMCO is out of California and their number is 800-899-8058.
This manifold is mounted at the transom and then wired directly to a switch at the main helm for easy switch over. I liked it because it also has a redundant manual function in case of electrical malfunction. It would need to be mounted on the transom however as it is approximately 10" long, but I recommend it for twin tanks as it has worked for us very well.
I hope that this information is helpful, and don't hesitate to give me a call at 360-393-3283 if you would like more information about it.
Sincerely,
Scott
