I have sent you a pm with a bit of advice, personally I'd say speak to mario,, whether he is available or interested in taking on such a task you will have to ask him of course.
But he is honest,reliable,and makes quality parts.... I think you would be better to build it yourself and see if Mario would be interested in building you key parts,such as drive units or the flipper. That way you built it mainly and have more understanding of your machine.