▁stri pes ▁ad orn ed ▁the ▁sides ▁of ▁the ▁car , ▁as ▁well ▁as ▁the ▁tr unk , ▁h ood , ▁and ▁mirror s . ▁The ▁car ▁also ▁carried ▁gold ▁ 1 5 " x 7 " ▁Super ▁Stock ▁III ▁Old sm obile ▁r ims . ▁Inter iors ▁were ▁similar ▁to ▁ 1 9 7 4 ▁except ▁for ▁re vised ▁door ▁pan els ▁and ▁new ▁revers ible ▁vin yl / vel our ▁seat ▁c ush ions ▁and ▁back s ▁for ▁the ▁all - vin yl ▁Str ato ▁bucket ▁seats . ▁The ▁most ▁popular ▁interior ▁color ▁combination ▁on ▁' 7 5 ▁Hur st / Old s ▁was ▁white ▁seats ▁and ▁door ▁pan els , ▁and ▁black ▁car pet , ▁dash board , ▁ste ering ▁wheel ▁and ▁console . ▁Add itional ▁colors ▁such ▁as ▁red ▁and ▁be ige ▁dash board , ▁car pet ▁and ▁seat ▁c ush ions ▁was ▁also ▁available . ▁The ▁Hur st ▁Performance ▁' D ual ▁Gate ' ▁Sh if ter ▁carried ▁on ▁for ▁ 1 9 7 5 . ▁An ▁optional ▁digital ▁LED ▁numerical ▁read out ▁t ach ometer ▁was ▁available ▁and ▁mounted ▁on ▁the ▁center ▁console ▁by ▁Hur st ▁Performance . ▁▁ 1 9 7 9 ▁ ▁Another ▁car , ▁now ▁called ▁simply ▁the ▁Hur st / Old s , ▁appeared ▁in ▁ 1 9 7 9 , ▁based ▁on ▁the ▁C ut lass ▁Cal ais ▁cou pe . ▁It ▁used ▁the ▁L 3 4 , ▁Old sm obile ' s ▁ 5 . 7   L ▁( 3 5