my friend just bought a setup like this for his GSX cause cops in SB are getting REALLY bad all of a sudden...so bad that they pulled over a STOCK ITR and said the guy had and exhaust

headers

and an intake

...and that was illeagal

...and he didn't have any of that stuff....

stupid cops...
anyway, I'll ask him what he did and where he got it from...then I'll let you know.
and no it isn't stupid...I personally wouldn't do it just cause I'd rather have a throaty sounding car all the time...rather than a loud obnoxious car when I open it up...