Re: 2004 cts v catalytic converters
I have my stock ones that came off the car when I had headers installed. I'd have to check my maintenance records, but I think they have ~55k miles on them, somewhere in that ballpark.
You can also do this - http://www.mandrelexhaustsystems.com...EXHAUST/Detail.
'05 Stealth Grey CTS-V, 19x8.5/10" CCW T140s with Toyo Proxes T1 Sports (summer), black Team Dynamics ProRace 1.2 wheels with 275/35-18 R-compounds (track), Hyperblack Rota Torques (winter), KW Variant3s, V2 front brakes, Hotchkis rear sway bar, EPS cam, TEA-ported 243 heads, FAST92 intake w/LS2 TB, JBA Camaro/G8 1-3/4" shorty headers w/JBA cat pipes, Corsa exhaust, UUC motor and tranny mounts, UUC shifter, MAPerformance trailing arms, Specter cradle bushings, etc...