Hagerty knows full well what the cars are, it's the local agents that usually don't know.
I don't know if RI is more expensive than NY but I have Hagerty and added my Cayman to the policy along with my Spyder. Both cars is $900 a year, not bad I think for Agreed Value coverage for both, flatbed towing and zero deductible. Spyder only was about $550(LOL!) or $600.