Nice suggestion but highly recommend not to use such boards the seller is offering. Why? Their boards are cheaply made (usually run 3V parts directly on 5V consoles) and eventually damage themselves AND your console. It doesn't have to happen but at least be warned. This one at least has some diodes but still, the 3V inputs are still connected directly to 5V. They're anything but best quality. Just my opinion.
P.S. If you need spare PCBs or regular games without SRAM made, I have my own boards left, that run directly on 5V parts and don't damage anything. For further info or interest, PM me.
