Saw it yesterday and did google it a little out of curiosity. Doesn't sound like that much of a player's game, and woder - are the parts unique, or can Gottlieb etc be substituted?
Couldn't find much useful, except this -
http://www.flippers.com/InterFlip.html
Having a perspex playfield sure is different; I am guessing they use someone else's parts (coils, plungers and so on) to build the thing so one should be able to find substitutes, but it is a gamble.