Something doesnt seem right for you to be getting that high a rate. Do you have a bad driving record? Lots of speeding tickets, accidents can cause alot of problems when it comes to rates.
I cant see how they can justify those prices unless they just dont want to insure car and figure maybe if your dessperate you will take the rate.
My brother is only 24/single and has a '00 Mustang GT also and pays about $1200 a year full coverage.
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My '00 GT
My '72 Cutlass
2000 GT Laser red-5speed,MAC Cold Air, MAC 2 1/2" Cat-Back, 3.27gears, Pro-5.0 shifter, Weld Draglite's 15x5 and 15x10, 275/50-15 DragT/A's, 165R15 front, BBK Underdrive pullies, BBK offroad X-pipe with Dynomax super converters
Best Quarter mile run to date: 13.350@101.79/1.844