I'm starting to look around for instance. Some systems don't have very many options when quoting online, thus the differences in coverage. So far:
$90k stated value
Hagerty (30k liability, $1k deduct, no mileage limit): $1600
Grundy (500k liability, $0 deduct, no mileage limit): $1300
StateFarm (500k liability, $1k deduct, 7500 mile limit, multi-line discount): $1550 - Subtract uninsured motorist and it drops to $1400.
ANPAC: (500k liability, $1k deduct, no mileage limit): $1500
Allstate: No Kit Cars
AAA: No Kit cars in NV (though they do in CA)