I was going to look at American Modern insurance group. http://www.amig.com the price I was quoted was not bad. About 1/2 as hagerty.
I'm with American Modern and have been for a few years. I have my T/A with them on the same policy as well. Two small claims and they were great to deal with. I also have an extra provision, a rider, that allows me to drive to work occasionally. While I havn't driven to work in one of the Pontiacs in a while it's well worth the peace of mind..