9 7 8 – 1 9 8 8 ) ▁ ▁The ▁C ut lass ▁Supreme ▁was ▁down s ized ▁for ▁ 1 9 7 8 , ▁along ▁with ▁the ▁rest ▁of ▁the ▁C ut lass ▁line . ▁An ▁ups c ale ▁C ut lass ▁Cal ais ▁model ▁was ▁added , ▁differ ing ▁from ▁the ▁C ut lass ▁Supreme ▁only ▁in ▁minor ▁trim ▁details . ▁The ▁new ▁not ch back ▁C ut lass ▁Supreme ▁proved ▁to ▁be ▁far ▁more ▁popular ▁than ▁the ▁controvers ial ▁fast back ▁C ut lass ▁Sal on ▁cou pe ▁and ▁sedan ▁introduced ▁at ▁the ▁same ▁time . ▁ ▁The ▁C ut lass ▁Cal ais , ▁essentially ▁replaced ▁the ▁previous ▁C ut lass ▁Sal on ▁series , ▁as ▁far ▁as ▁model ▁position ▁and ▁content ▁were ▁concerned . ▁The ▁Cal ais ▁featured ▁re cl ining ▁Str ato ▁bucket ▁seats , ▁center ▁console , ▁sport ▁ste ering ▁wheel , ▁full ▁instrument ation , ▁tun ed ▁susp ension ▁with ▁front ▁and ▁rear ▁s way ▁bars , ▁color - key ed ▁wheel co vers , ▁front ▁gr illes ▁m im ick ing ▁an ▁ice ▁cube ▁t ray ▁( as ▁opposed ▁to ▁the ▁water fall ▁style ▁used ▁with ▁the ▁C ut lass ▁Supreme ) ▁and ▁more . ▁ ▁Both ▁the ▁C ut lass ▁Supreme ▁and ▁Cal ais ▁were ▁available ▁with ▁T - top s ▁or ▁a ▁factory ▁sun ro of , ▁even ▁on ▁the ▁base ▁C ut lass ▁Supreme ▁cou pe ▁with ▁the ▁factory ▁radio ▁delete ▁option . ▁ ▁From ▁ 1 9 7 8 ▁through