Just got the latest issue of Muscle Mustangs and Fast Fords. It has a 4 page special on Joe's GT. I'm sure most people remember the IMV films video where they were installing the twin turbo setup and attained 1012rwhp, well in the article they have installed the new 5.4 motor and turbos and have gotten 1181rwhp and 1068lb/ft! Joe says he's going to put on bigger turbos (GT4067's)soon capable of 750hp a piece and if they're not enough, maybe some even bigger ones(GT42's). The guys at HP performance and Stage 6 motorsports say that 1500hp is fast approaching. Some exotics Joe has had in the past include a Lamborghini VT roadster, a Kleeman SL65 and a Lotus Esprit twin turbo. When asked what will come after the Ford Joe said "How do you top this?"
http://www.turbofordgt.com/index.htm
http://www.stage6motorsports.com/s6_fordgt.html