The antenna dosen't make sense to me either, but I busted my butt trying to find an original one to make my car completely stock. They sold new in the mid $60's and today range from high $30's with miles to the one Dick Sloan has for $125K (27 original miles). I learned the hard way to leave the convertible top down as it marks up the clamshell when it is up (at least on black) and trying to find the replacement adhesive material that goes on the clamshell was a pain, but was solved by one of the board members here who reccomended wing walk material used on aircraft which is identical to the 3m material that was used by the Porsche and no longer available.