I understand what your saying.
I'm with ANPAC.I have all four of my cars with them.All have full coverage,3 are under the Classic car policy.The fourth is my daily driver,WRX STi,it runs $ 827 a year.
At first I just had my LSC with them and it was higher - for sure.
More cars- better price break.
There are a lot of us (Cobra owners) here that have their insurance.
Our agent is a Cobra owner as well.
Your advise is good.