There is one on ECR's website. I would copy that. Basically you fit NAS 110 fuel system (lines, tank, pump, evap you would need to figure out -- use disco/d90/RRC) and a 14CUX system with all sensors. I have not done it, but I have taken apart two NAS 110s, am building a NAS 110, and had a carbed V8 110.
*not legal advice*