I'm not sure if you were aware of it already but here is a site with excelent retro LASD pictures, mostly 60s-80s stuff with some 90s sprinkled in but maybe it could help. https://lasdretired.org/photo-album/stations-historical-photos/ https://lasdretired.org/photo-album/172201/
some examples below, note the Gran Fury with unusual lightbar and door mounted speed radar: