Below is a brief year-by-year list of the 305 models, with specifications where available. If anyone has more information, please let me know.

Model	Year	Body type
GL	1977 - 1983
GR	1977 - 1983
SR	1977 - 1983
GRD	1978 - 1983
GL	1980 - 1983
GLS	1980 - 1983
GLS	1980 - 1983
SR	1980 - 1983
S	1981 - 1983
GL (mk 2)	1983 - 1989
GL (mk 2)	1983 - 1989
GLD (mk 2)	1983 - 1989
GLD (mk 2)	1983 - 1989
GLS (mk 2)	1983 - 1989
GR (mk 2)	1983 - 1989
GR (mk 2)	1983 - 1989
GRD (mk 2)	1983 - 1989
GRD (mk 2)	1983 - 1989
GT (mk 2)	1983 - 1989
GT (mk 2)	1983 - 1989
GTX (mk 2)	1983 - 1989
GTX (mk 2)	1983 - 1989
SR (mk 2)	1983 - 1989