Im trying to determine if the antenna on my Mach is original. Its a teardrop with retangular base, the base mounts with screws and locating pips, the chrome cover is held on by a threaded collet and the mast will detach from the base exposing a 1" splined stub. Also the coax will reach the radio without an extension. Its a Jan built Dearborn car. A photo of a teardrop antenna would be appreaciated.