How much is car insurance on a new 911 gt2 Porsche?

I am a 25 year old who recently became very successful in the automotive industry and I decided I wanted to get a Porsche. Now i know about how much it is to keep a Porsche maintained because i have worked on them but i am not sure on the insurance. Please help anyway you can. And for the record i am not getting a quote from any website because i do not feel comfortable giving away personal information to an insurance company before i decide to use them.