I have no literature but this may help. Check out the social group on this forum:
Everett Morrison.
Also, note that early EM cars could be configured for a variety of suspension and engine combinations. So any info you may want may be specific to your car. . . . I bought a used EM Cobra about twenty years ago and completely rebuilt it about two years later. All I did was keep a list of improvements I wanted to make for the first two years, and then disassemble the car (it's easy) and rebuild it the way I wanted.