Did you ever find a shop to do this? I am looking for the same thing
Nope... I did a bunch of research but ultimately punted on the idea because I'm not sure I'm going to keep my Tahoe. My sales guy is begging me to come in and trade up to an RST spec'd Tahoe, the dealership where I get my service done is trying to put me in a Denali, and I'm seriously considering moving to a Silverado pickup and installing a BDS coilover lift kit to use as a platform to build my own version of a Ford Raptor.
Anyways... Not sure where you are located in the DMV area but you can try:
No Limit Inc: Belair Road, Baltimore, MD
Rim Source Motorsports: Belair Road, Baltimore, MD
Elite Auto Service: Laurel MD
ATO Autosports: Joppa Road, Towson, MD
Disclaimer...
I have not personally worked with ANY of these shops. I just know that, based on my research, these guys all list suspension mods on their respective websites. Also, if it were me, I'd probably go with No Limit Inc. Based on word of mouth as well as research on their website and IG account, they seem to do a lot of work for Pro Athletes. I did reach out to No Limit about doing a full chrome delete on my Tahoe. They were very helpful but the shop was booked 3 weeks out and they were on the pricier side for what I wanted to have done.
Last but not least.... There is a guy in my area (Columbia/Ellicott City, MD) with a black Tahoe LT. It looks like he has his truck lowered and is running a Corsa exhaust. I was hoping he is a member of this forum and would chime in on where he got his work done.