O6 S/C grand prixs are awesome, my friends brother has one and that thing gets up but far as gas mileage, it should not be to bad probably 20 mpg and up if your under 70 miles per hour.
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Exterior- stock painted black wheels, clear corners, stainless steel grill, cross and drilled front and rear rotors with evolution brake pads.
Coming soon- 18 inch black mustang bullet rims, GT/GTP rear bumper, tinted windows.
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