The CTS are fast. Hell even the v6 ones are not bad.
We have a guy around here that has a CTS-V all made to look like it is the norm v8 he has lots of go fast goodies on it it would beat most cars around here.
lol yes we will most other guys have a box tuner like edge or something around here.
My buddy only has my ATS e-power (PPE) tuner on his and a down pipe back banks exhaust.
I see you have a few more mods than me. I am sure you walk a lot of guys here in town. I do and my trans hates me.
The older ones would be cooler but the new ones it can be done. My buddy has a cooper s and it looks like it could fit if I add 6-8" to the front in the fender behind the wheel.
Like they did in the text mule for the Cadillac Sixteen engine in a Tahoe.
One thing I will say.
Line-X if it ever cracks chips or comes off they fix it for free.
I paid $1000 in Canada it is more over here. I had the box+over the rails done in 1/4" plus the rockers and rear wheel wells. My fender flares and vent visors.