Fabspeed bypass pipes - worth it??

[23109VC]

If I were to have about $500 burning a hole in my pocket, and used it to buy these bypass pipes and put them onto my 2000 2.7L 5 speed - am I really going to notice any difference in speed or sound?

i've read claims of 8hp and more torque - which some people could feel via the butt-dyno.... just curious if anyone here thinks that on a 2.7L car, this mod would actually make the car feel quicker?

I'm in CA - so I need to stay smog legal. Pelican parts website says the secondary cats are unnecessary, that it won't throw a CEL and that it will still pass smog. That true? why did Porsche put those cats there if we don't "need' them?

does it sound tons better once these cats are gone?

I'm also thinking of putting the Pedro techno-torque onto my car - wondering if the combo of that plus the bypass pipes might give the car a little more zip!

thanks.