SSP w/no buck tags..

[FoxChassis]

Most years have a radio code, even units that were ordered with the "radio credit" (delete) option. (Code "Y" on the door tag.)

The only four years that I have seen no radio code on the door tag were 1982, 1983, 1987, and 1989. Some tags in those years, except 1982, had a radio code and some did not.

A 'no code' I believe means no radio but I'd have to look at a bunch of data to be more certain.