As a California resident it was difficult to get a quote. Since I am currently with Allstate (3 everyday driver cars) and JC Taylor (3 collector cars) I didn't think it would be an issue. I talked to various reps from both companies and they were determined to not insure the M3W. Then I talked to two other companies that were not any help.
I called Grundy Worldwide and spoke to an agent who verbally turned me down. Then I discovered their website and applied. The M3W was on the drop down menu, however, it only went to year 2015. I put it down as a 2015 and bingo! received a quote. Called back when the delivery date was more realistic and had them update the year on the website. I think it was a technical glitch.
This is were it got more interesting. After receiving the quote and as I was filling out the application I had a question. So I called an agent. I think it was the same one who I had talked to originally. He said he had to talk to an underwriter and came back a few seconds later and told me they don't insure M3W's. I explained to him that I already had a quote. He refused the service. I went ahead and finished filling out the application (as best I could) and sent it in with my check for $524 for the year. NO problem... Back came the confirmation and the policy in the mail!