▁Edition " ▁appearance ▁option ▁package ▁came ▁on ▁ 2 , 3 1 8 ▁GT ▁coup es ▁and ▁ 2 , 3 1 0 ▁GT ▁convert ibles . ▁Av ailable ▁only ▁in ▁black , ▁silver ▁met all ic , ▁white , ▁and ▁red , ▁they ▁featured ▁a ▁body - color ed ▁h ood ▁sc oop , ▁rear ▁spo iler , ▁side ▁sc o ops ▁and ▁ro cker ▁pan els , ▁a ▁black ed - out ▁panel ▁between ▁the ▁ta ill amps , ▁and ▁ 1 7 ▁by ▁ ▁five - sp oke ▁al umin um ▁whe els ; ▁while ▁the ▁Inter iors ▁included ▁black ▁le ather ▁and ▁vin yl ▁seats ▁with ▁silver ▁inser ts ▁and ▁p ony ▁logo , ▁al umin um ▁shift ▁kn ob , ▁a ▁unique ▁instrument ▁cluster ▁with ▁ 3 5 th ▁anni versary ▁script , ▁silver ▁and ▁black ▁floor ▁m ats ▁with ▁ 3 5 th ▁anni versary ▁logo , ▁and ▁silver ▁door ▁trim ▁inser ts . ▁ ▁The ▁ 3 . 8   L ▁O H V ▁Es sex ▁V 6 ▁returned ▁as ▁the ▁base ▁engine ▁for ▁ 1 9 9 9 . ▁A ▁new ▁split - port ▁induction ▁system ▁replaced ▁single - port ▁induction , ▁which ▁increased ▁the ▁base ▁model ' s ▁output ▁to ▁ ▁at ▁ 5 2 5 0   r pm ▁and ▁ ▁of ▁tor que ▁at ▁ 2 7 5 0   r pm . ▁ ▁For ▁ 1 9 9 9 , ▁the ▁Must ang ▁also ▁received ▁a ▁change ▁to ▁its ▁ta ill