It's 5-6 hours away for me, so I might consider making this a weekend trip. July 21 (Sunday, probably morning/early afternoon) and every other weekend from there would work for me. Prefer to leave the Saturday open for a day hike.
It'll be easiest if you just ask to join the "The 22 Rally" page on Facebook. All the info will be there once it's released.
If you're in driving distance of Boston there is another large exotic meet at Mclaren of Boston on May 16h that I'm going to attend. You have to preregister via the FB page though so join that page asap.