It's possible to upgrade, but you need to find someone that'll sell you the entire V1/V2/V3/V4 board and conversion kit, not just the typical upgrade kit. If you try to by an upgrade kit (in this case, to V4), you'll get the typical upgrade, as Konami does not sell the full conversion kit + upgrade anymore.
It's possible to find one for sale, but it's VERY difficult. |