@CatHerder
I think there's probably a good market for such a beastie. If it cost say $30.00 or so, I think people would buy them. Replacement A4000 supplies cost $50.00+ for used units and they are only 145W or so. Even if you didn't want to make the investment, if you could do a schematic or 'how to' guide on converting an AT to 4000 p/s, I for one would be thankful. btw, I can't believe anyone would pay $50.00 for an ATX to 4000 adaptor like on eBay.