HPDE stuff is separate unless you go with lockton affinity I believe. No primary insurance will cover this. Look up on-track insurance for quote based on your degree of value coverage.
I have agreed value thru Grange on my supra. full coverage, towing , rental and No restrictions for usage unlike Haggerty and Grundy.
Call your local grange rep or I suggest McFall insurance in Kettering, OH. That's who I work with on all my insurance coverage.