PSGSLOT Unlike other period "woodies," this one was fairly graceful -- and functional, with "clamshell" center-opening rear doors. The last of the true letter-series cars was the 300L of 1965. It saw 2845 copies, including a mere 440 convertibles. Wheelbase was 124 inches for all models except wagons (121 through '66, then 122 inches).|Usability Glossary. Usability First