Make sure you get an "Agreed value" policy, NOT "stated value"
I was able to insure my Chevelle when I was under 25, but no insurance company wanted to insure my Model T (seriously, my 20hp 40mph top-speed Model T is the one I couldn't get insurance on
). The "regular" insurers said I needed collector insurance, and the collector insurers said they couldn't insure someone under 25.
