Zikizira, actually, the RRE short tubes and RIPP long tubes, are in fact, one off builds. They managed to stockpile some over the years. I know Mike at RRE personally. And yes, they do run rich with aspiration mods, easily corrected with the AEM FI/C with Brian J's wiring harness. My 4G has every mod available aside from the RIPP SDS, and while it will take a stock 350, it will never touch my 370. The 4G handles like a tank and has a HUGE turn radius. Great daily driver, but NOT a track star.
some pics of my 4G:
http://s250.photobucket.com/albums/g...t=DSCN0055.jpg
http://s250.photobucket.com/albums/g...t=DSCN0046.jpg