i havent decided weather or not i would actually get one, from talking with my tuner he said i would see probably a 30hp gain from it, said thats what he normally see's people with such manifolds gaining, and even if it was making 50hp, the power to price ratio doesnt seem 100% spot on to me, 800 or so worth of tuning can gain ALOT more than that, and true it lets your engine breathe better, but i donno, its just visually appealing. i would say if you were at a pinical of your performance bolt ons, and the manifold was the LAST thing you didnt have i would go for it, thats where im at but, i will do more tuning, and probably a race gas map/tune, before i go there to insure my tune is 100% that it will ever be to see 100% gains for it