I got insurance for my Goblin last week through Robbin at Midwest Classic (
https://www.midwestclassicinsurance.com/) The policy is through American Modern, with a stated value and 3k miles per year. Pretty painless process, had to provide pictures of the car from all four side, a shoot of the engine and a build sheet (excel file of all my expenses) to support the stated value. Did all that over email, then called in my credit card info and had temp insurance cards later that day
Edit to add: Insurance was 365 for the year, not a completely clean record... no one is perfect at the end of the day