Steve, The link Scott provided is for the MTBC, and is a small(ish) group of turbo car guys and gals. The club meets a few times a year for races at local tracks, and we also rented Norwalk in September. The club also has a Christmas gathering to review the years festivities, and talk about upcoming events and ideas! Last year we watched some videos of our track outings and made fun of people with N/A cars. Among other things!
Take care...Brian
Steve, the Michigan Buick Performance Club(aka Michigan Chapter of the Buick Gran Sport Club of America) has a web page here
We do 'stuff' all over the state. Christmas party, Garage tours, race at Norwalk, Bowling Green, Stanton, Milan, US131, picnics, and more, check it out!
PS, I bet you have already heard about me from your neighbor??