▁with ▁the ▁Che v ro let ▁Che v ette ▁in ▁the ▁US ▁and ▁Canada , ▁the ▁Che v ette ▁and ▁K ad ett ▁were ▁built ▁on ▁G M ' s ▁T - Car ▁platform . ▁Similarly , ▁the ▁Caval ier ▁was ▁based ▁on ▁the ▁Op el ▁As con a , ▁but ▁featured ▁the ▁front ▁end ▁of ▁the ▁M anta , ▁as ▁did ▁the ▁Che v ro let ▁Che v air ▁in ▁South ▁Africa . ▁These ▁models ▁were ▁built ▁on ▁the ▁G M ▁J ▁platform . ▁ ▁This ▁marked ▁the ▁end ▁of ▁a ▁long ▁and ▁grad ual ▁process ▁by ▁G M ▁to ▁cons olid ate ▁its ▁two ▁European ▁subs idi aries ▁with ▁preference ▁for ▁the ▁larger , ▁and ▁in ▁terms ▁of ▁both ▁absolute ▁sales ▁and ▁market ▁share , ▁more ▁successful ▁Op el , ▁which ▁sold ▁ 9 2 5 ▁ 0 0 0 ▁vehicles ▁to ▁V aux hall ' s ▁ 1 4 3 ▁ 6 0 0 . ▁Since ▁the ▁early ▁ 1 9 6 0 s , ▁V aux h alls , ▁whilst ▁being ▁designed ▁and ▁built ▁in ▁the ▁United ▁Kingdom , ▁increasing ly ▁shared ▁their ▁general ▁specification , ▁engineering ▁features , ▁and ▁sty ling ▁with ▁Op el ▁counter parts ▁( the ▁V iva ▁with ▁the ▁K ad ett ▁and ▁the ▁Victor ▁with ▁the ▁Re kord , ▁for ▁instance ) ▁even ▁if ▁the ▁two ▁cars ▁were ▁distinct , ▁with ▁few ▁to ▁any ▁inter change able ▁parts . ▁From ▁the ▁late ▁ 1 9 6 0 s ▁and ▁into ▁the ▁early ▁ 1