I've had some turbo work done by Bison's Performance, and I'm very happy with it. And you hear nothing but great things about what he does with Turbo Buicks. Then there's Hartline's and Cotton's Performance which again I've heard lots of good things. However these guys are on the East Coast. Arizona GN also good things but way down south... Are there any home run shops up North? I'm pretty much in the middle of the continent. I'd love to take my car to somebody who really knows Turbo Buicks inside and out to work out a few bugs and dial it in.