la ke ▁motor ▁was ▁powerful ▁but ▁un re li able . ▁Only ▁B rab ham ' s ▁Rep co ▁V 8 ▁engine ▁provided ▁a ▁us able ▁combination ▁of ▁power , ▁light ness ▁and ▁reli ability , ▁but ▁its ▁age ▁and ▁design ▁left ▁little ▁room ▁for ▁further ▁improvement . ▁Hay es ▁concluded ▁that ▁Ford ' s ▁name ▁could ▁become ▁t arn ished ▁if ▁the ▁Lot us ▁were ▁to ▁continue ▁winning ▁against ▁only ▁less er ▁opposition , ▁and ▁that ▁they ▁should ▁agree ▁to ▁use ▁the ▁unit ▁in ▁other ▁teams , ▁and ▁hence ▁potentially ▁domin ate ▁Formula ▁One . ▁ ▁At ▁the ▁end ▁of ▁ 1 9 6 7 , ▁Co pp ▁and ▁Hay es ▁g ently ▁explained ▁to ▁Chap man ▁that ▁he ▁would ▁no ▁longer ▁have ▁mon opol y ▁use ▁of ▁the ▁D F V ▁and ▁in ▁August ▁ 1 9 6 7 ▁it ▁was ▁announced ▁that ▁the ▁power ▁unit ▁would ▁be ▁available ▁for ▁sale , ▁via ▁Cos worth ▁Engineering , ▁to ▁racing ▁teams ▁throughout ▁the ▁world . ▁Hay es ▁released ▁the ▁D F V ▁initially ▁to ▁French ▁team ▁Mat ra , ▁head ed ▁by ▁Ken ▁T yr rell ▁with ▁Jack ie ▁Stewart ▁as ▁a ▁driver . ▁What ▁followed ▁was ▁a ▁golden ▁age , ▁where ▁teams ▁big ▁or ▁small ▁could ▁buy ▁an ▁engine ▁which ▁was ▁compet itive , ▁light , ▁compact , ▁easy ▁to ▁work ▁with ▁and ▁relatively ▁cheap ▁( £ 7 , 5 0 0 ▁at ▁ 1 9 6 7 ▁prices ▁or ▁about ▁£ 9 0 , 0 0 0 ▁in ▁ 2