Havertys is who I have used for the last couple years, however, I am thinking of changing in January. They don't mind rollbars, just want a full description of any and all modifications and price the policy accordingly. However the 3000 mile max a year is killing me because I drive my junk. I realized on the way home from the Power Tour that I was over my max and that was in June.....argh....
Don't forget that little issue if you are shopping and are truely going to drive your car.
