I have a 39" PF 23" BG and use a 15" for DMD. In a standard mid 70's Bally cab (FYI - that I salvaged from a barn that was stripped and rotting). Anyhow, a 23" fits almost perfectly width wise. I will also throw out my 2 cents for virtual pins, They can be fun to play and help you learn certain modes but if you plan to compete in league play, it could cause your timing/gameplay to be off. While VP10 should help in realism and physics it's just not the same.