I had heard that the Charlton Park show was the largest one-day show in Michigan but others say that Lane has the top spot now. Charleton Park is a great venue and the swap meet is an additional incentive. Here's a link: http://www.charltonpark.org/news_events/special_events.html Don't know where you'll be staying but you might squeeze in the Gilmore Museum in Hickory Corners, between Kalamazoo and Hastings.
Tomorrow afternoon/evening(6/13/13) in Westphalia, Michigan there will probably be upward of 900-1,000 cars. It is a nice small town and a real good time. Don't know where it ranks as far as 'the biggest' or whatever but you'd be hard pressed to find another Thursday night 'cruise in' that pulls that many vehicles. BTW, just to indicate the size of town this is, there is not even a local police department. Scott
This event isn't on-topic HAMB, however quality of most participating cars is good enough to win local static shows and they all get driven as they were originally intended to (even the rare & expensive ones). Stock appearing and factory stock running on Friday & Saturday. http://www.fastraces.org/fastraces/fastraces.nsf/top-menu-items/ghp16