Tuhia he haere tonu mo tenei whitianga - Kei te mahi tahi te ACO me te IMSA me Bill France Jr. o NASCAR me Daytona Speedway, hei akiaki i nga whakataetae whakataetae. Ki taua mutunga e wha IMSA me e rua NASCAR-spec waka i whakaurua. Ahakoa i takahi te whakataetae ki tētahi whakataetae NASCAR i Riverside e rua o ngā kapa rangatahi i tae mai. I whakataetae a Hershel McGriff me tana tama i roto i ta raatau Dodge Charger, i te wa i tohatoha a Dick Brooks i tana Ford Torino me Dick Hutcherson (he taraiwa NASCAR ano hoki, me te toa o te whakataetae 1966
me Ford) me Marcel Mignot (he kaiwhakaako taraiwa i te arahi o Le Mans). Me whakarerekē ngā waka mō ngā takahuri tika, ā, me whakanoho i ngā pūhoro matapihi me ngā rama. Ko nga motuka tino taumaha i te whakataetae, i kukume ratou i te aro nui o te hunga papaho, a he tino rongonui ki te iwi French. Ko John Greenwood te toa o Amerika Trans-Am o naianei i kawe mai i nga Corvettes ki te whakataetae. I tenei tau i tae mai tana Corvette IMSA-spec kua whakarerekehia, i tapaina ko te "Batmobile". Ko te anga i hangaia e Bob Riley (ko te Ford GT me te Saturn rocket engineer) me te aerodynamics na Zora Arkus-Duntov. Ahakoa he taumaha, me te nui o nga reera-kounga, ko tana V8 427 inihi kiupiki nui i pana atu i te 700 bhp me te piki ake o te motuka ki te 355 kp / h (220 mph). I hokona e Michael Keyser tetahi o nga Chevrolet Monzas hou i whakarerekehia e DeKon Engineering, i hangaia hei tango i a Porsche i te raupapa IMSA. Ko Tom Vaugh rāua ko Diego Febles i whakauru atu hoki ki te whakataetae e rua o aua Porsche e rite ana ki te IMSA.