▁car ▁built ▁by ▁J agu ar ▁and ▁sold ▁from ▁ 1 9 5 1 ▁to ▁ 1 9 5 3 . ▁The ▁" C " ▁stands ▁for ▁" comp et ition ". ▁ ▁The ▁car ▁used ▁the ▁X K ▁ 1 2 0 ▁running ▁g ear ▁of ▁the ▁contemporary ▁road ▁proven ▁X K 1 2 0 ▁in ▁a ▁light weight ▁tub ular ▁frame ▁designed ▁by ▁J agu ar ▁Chief ▁Engine er ▁William ▁He yn es ▁with ▁an ▁aer od ynamic ▁al umin ium ▁body ▁joint ly ▁developed ▁by ▁William ▁He yn es , ▁R ▁J ▁( Bob ) ▁Knight ▁and ▁later ▁Mal col m ▁S ayer . ▁A ▁total ▁of ▁ 5 3 ▁C - Types ▁were ▁built , ▁ 4 3 ▁of ▁which ▁were ▁sold ▁to ▁private ▁own ers ▁mainly ▁in ▁the ▁US . ▁ ▁Spec ification ▁ ▁The ▁road - going ▁X K 1 2 0 ’ s ▁ 3 . 4 - lit re ▁tw in - cam , ▁straight - 6 ▁engine ▁produces ▁between ▁ 1 6 0 ▁and ▁. ▁The ▁C - Type ▁version ▁was ▁originally ▁tun ed ▁to ▁around ▁. ▁The ▁early ▁C - Types ▁were ▁fitted ▁with ▁SU ▁car b ure t ors ▁and ▁drum ▁bra kes . ▁Later ▁C - Types ▁( mid ▁ 1 9 5 3 ) ▁are ▁more ▁powerful , ▁using ▁triple ▁tw in - cho ke ▁We ber ▁car b ure tt ors ▁and ▁high - l ift ▁cam sh aft s . ▁They ▁are ▁also ▁l ighter , ▁and ▁from