We have our Porsches and Corvairs insured with American Collectors insurance
www.americancollectorsins.com
They do dot have DE options available for all states yet, but you might give them a try. You might want to address your concerns to the lady who has helped me for the last 10 years...her name is Maura Craven. She has been most helpful, and can get things done quickly. I can speak nothing but volumes of praise for her (no, I am not affilliated with them in any way other than having 4 cars insured with them)