ed ▁up ▁in ▁the ▁back ▁and ▁the ▁to ps ▁could ▁be ▁seen ▁through ▁the ▁rear ▁window . ▁The ▁Series ▁ 2 ▁cars , ▁with ▁Br istol - built ▁bodies , ▁had ▁tri ang ulated ▁trailing ▁radius ▁arms ▁for ▁improved ▁toe - in ▁control . ▁Gir ling ▁disc ▁bra kes , ▁usually ▁without ▁ser vo ▁assistance , ▁of ▁ ▁diameter ▁were ▁used , ▁in board ▁at ▁the ▁rear . ▁When ▁leaving ▁the ▁factory ▁the ▁El ite ▁originally ▁fitted ▁P ire l li ▁C int ur ato ▁ 1 5 5 HR 1 5 ▁ty res ▁( CA 6 7 ) ▁ ▁Advanced ▁aer od ynam ics ▁also ▁contributed ▁to ▁the ▁car ' s ▁very ▁low ▁drag ▁coefficient ▁of ▁ 0 . 2 9   – ▁quite ▁low ▁even ▁for ▁modern ▁cars . ▁This ▁accomplish ment ▁is ▁all ▁the ▁more ▁remarkable ▁considering ▁the ▁engine ers ▁did ▁not ▁enjoy ▁the ▁benefits ▁of ▁computer - a ided ▁design ▁or ▁wind ▁tunnel ▁testing . ▁The ▁original ▁El ite ▁draw ings ▁were ▁by ▁Peter ▁Kir wan - T aylor . ▁Frank ▁Cost in ▁( bro ther ▁of ▁Mike , ▁one ▁of ▁the ▁co ▁found ers ▁of ▁Cos worth ), ▁at ▁that ▁time ▁Chief ▁Aer od ynamic ▁Engine er ▁for ▁the ▁de ▁Hav ill and ▁A ircraft ▁Company , ▁contributed ▁to ▁the ▁final ▁design . ▁ ▁The ▁SE ▁was ▁introduced ▁in ▁ 1 9 6 0 ▁as ▁a ▁higher - per formance ▁variant , ▁featuring ▁tw in ▁SU ▁car b ure tt ors ▁and ▁fabric ated ▁exhaust ▁manifold ▁resulting ▁in