Ken,
This is the selector valve:
http://products.pollakaftermarket.co...n-valve/42-159
Can handle up to 65psi fuel pressure.
This is the kit they offer that comes with the selector valve, a DPDT switch, the connector for the valve and a switch plate that has main & aux indications.
http://products.pollakaftermarket.co...n-valve/42-300
The link has another link to a installation sheet with a great diagram for installation. the factory wiring and dash switch can be used to control the valve also.