427 1965 lemans

I recall reading that H/M and SHELBY fielded gt 40 at lemans in 65. Shelby team was upset that FORD supplied the engines without shelby mechanics doing their owm builds--FORD gave the teams no choice in the matter--High number of dnf due to engine failure in that race---Shelby pissed and worried that FORD would throw blame his way when he felt that if SHELBY engines had been used things may have gone better--any way i guess they worked it out as 66 turned it all around