It should work. The only reason there is an EFI specific tank is to accommodate installation of the pump in the tank. A carbed bike gravity feeds the fuel. You don't need any of that stuff. Just seal it up.
If you get the correct petcock, you'll have a reserve. There really is no reserve tank. When the fuel drops below that brass tube sticking out of the top of the petcock, it can no longer draw fuel. Switching to reserve simply switches to an alternate opening lower on the petcock. It's the same tank.
The "reserve" concept is really just a reminder to get gas before you run out. That's why you can eff yourself if you don't switch it back when you fuel up.
If you get the correct petcock, you'll have a reserve. There really is no reserve tank. When the fuel drops below that brass tube sticking out of the top of the petcock, it can no longer draw fuel. Switching to reserve simply switches to an alternate opening lower on the petcock. It's the same tank.
The "reserve" concept is really just a reminder to get gas before you run out. That's why you can eff yourself if you don't switch it back when you fuel up.