I was talking about the moden LS3 - but I guess that answers my question. Why would you go back to old school gassers teck when the LS3 already comes with a nice tight little intake package?
I think the price tag is why you don't see many (any) people here using them. Looks like Show Car/TV Show/Very Rich Guy technology. Most of us are quite happy with the way the stock LS fuel injection systems work, and they can be tweaked to produce more HP easily.
72 Ontario Orange Coupe. 2001 LS1 - LS6 block & Intake, Thunder Racing Cam, Ported heads and Throttle Body, Meziere electric water pump, Hooker Shorty Headers, 2001 T56 6-speed trans, VB&P Street & Slalom suspension, Magnaflow exhaust, DeWitt's radiator, SPAL fan, C5 seats, Borgeson steering conversion. Tuned by Slowhawk Performace. Future mods: HydoBoost, floor mats.