I know its sounds rather simplistic, but you just need to shop around for the best deal.
If there is anyway to get it in a parent's name as the primary driver, that will save you, especially with a multi-car family discount. Also, if either they or you (if you're the primary driver) can list it as a recreational or pleasure vehicle, the insurance will be cheaper. However, if used as daily driver, you probably will not be able to use this. Furthermore, the deductible will make a difference.
Seriously though, shopping around can get you some dramatic differences. My Ram Sport Quad Cab with a Hemi was going to cost me nearly what my 01 Cobra was going to run. I went with another insurance company and it was almost half of what my insurance company on the Mustang was going to charge me. Ironically, when I called for a quote to switch my Cobra, the insurance was higher with the company my truck was now insured with so I stuck with the old one.