Found aftermarket Viper Intake, questions.......

I stumbled across this site, they have 2 Viper intake manifolds, one for street and one for race, Ive never heard of these being normal mods, anyone know anything about them, they say the street intake ads 60hp and tq, Im going to call them tomorrow to get some more info Ill keep you guys posted.

I cant get a direct link from the site so you will have to find it
www.ls1motorsports.com , go to the 'Viper' link, then click on 'Induction' then scroll to the bottom.