Tom Wong in Vancouver, WA might be an option. I know he does amazing work. Not sure if there is a better shop closer though. I make a 3 hour trip to see him whenever I get work done. He is worth the drive, plus you get a road trip after work is completed to have fun with the new mods.
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2023 Black ZL1 **Awaiting Allocation**
476whp 455trq / Tuned by Tom Wong
CAI Intake with ADM Scoop, Borla ATAK cat-back, ARH 1 7/8 Headers and HF Cats
Custom Comp Cam 231/234 114LSA 617/598 lift, Katech timing chain
Apex Catch-can
VMAX Ported Throttle Body
20" Niche Essen's wrapped in Michelin PSS 315/295