I just read a test where they ported a cobra intake and rab it against the bbk ssi. the bbk made more hp and torque. It is pretty close to the holley systemaxII intake i believe for flow numbers.
I have one on my car, it looks great, the only problem is, if you tear an upper intake gasket, you are gonna have to wait a good while before you get another one. I have been waiting 2 weeks for mine to come. Other that that its great, plus it comes with fuel rails.