Just be aware that the "Prime" position runs off the reserve stand pipe, so now you won't have a "reserve" to fall back on. When you run out of gas, you will really be out of gas.
Since it sounds like you still have the two original petcocks, which are specific "left" and "right" units, you can do a manual petcock conversion. Details are here .....
http://en.650wiki.org/index.php/5.02.1_Vac_Petcock_Conversion
Since it sounds like you still have the two original petcocks, which are specific "left" and "right" units, you can do a manual petcock conversion. Details are here .....
http://en.650wiki.org/index.php/5.02.1_Vac_Petcock_Conversion