I'll 2nd that - Fullsac dual conversion kit is anothercheaper option- only $179.

 

Jus wanted to chime in. I have the Rush 2in on my 07 SG. Great sound but after a few hundred miles I wish it were a touch louder. Keep in mind I'm in mile high Denver. After speaking with Fuelmoto, they advised against 2.5in on the 07's. Decel popping and not enuf backpressure. I ordered my 2.25 baffles from them and will let you know how it works out.

 

I have the 1.75 and they sound and look great. As stated earlier if you want them louder or quieter change the baffles.