i switch mine with my edge insight cts, i would recomend u get this so you can keep an eye on things. I have a s&b intake, they really nice. I have a 5" mbrp straight exhaust, love it. The fitment was really good. i went with the 409 stainless.
2005 GMC 2500 4x4 duramax
, S&B cold air intake,S&B mouth piece, 5" straight pipe, pcv reroute, EFI Live by kory willis, insight cts, suncoast torqu convertor, suncoast gmax 5 kit, deep alumnamum trans pan, transfer case brace, tow mirrors, projector headlights with 6000k bulb, recon led tail lights, led interior lights, 33in Hankook, indash alpine radio, 2 10'' rockerfosgate subs