83 SS no bucket seats offered
84 SS bucket seats offered as option

ash tray on 84 SS w/center console was in the console itself (in front of
shifter), not under the radio.

83-84 SS had the "genuine" woodgrain dash
85' SS went to the black w/red stripe dash 
83-84 SS had the same "race" blue cloth interior w/ vinyl door panels
85 SS interior was of different cloth material w/ vinyl door panels
86-88 SS used velour type interior with matching velour door panels
Cast aluminum wheels on the 86-88 SS were "borrowed" from the 80 Z28