If the Salisbury in your profile is in Maryland then I'd call NGP in Aberdeen and ask them the question. While they may not be able to tell you (legally speaking, so if you get the wrong things you can't come back to them and sue them for not giving you the correct information) if the Beetle parts will interchange, they "may" be able to point you in the right direction and help you find a MK III (which is what the underpinnings and driveline of your Cabrio are) that has a manual setup in it...
Mike





