I'm looking for someone with a 67 or 68 convertible, a tape measure, and a willingness to go out to the garage and measure something for me. I need the distance from the base of the windshield (frontmost edge of the dashpad inside the car) back to the drip rail (where the convertible top tack sticks bolt on), measured along the centerline of the car. I hope that makes sense to someone here. Doesn't have to be exact, nearest half inch is fine. Thanks in advance.