Thanks guys for all of the comments and questions. I've researched the ram air on the E & F models and talked with some very knowledgeable Mooney folks and the consensus is that by moving the filtered air into the left cylinder air inlet, the same boost to mp can be achieved. if I do this, I can use most of the same parts except for the air inlet for the fuel injection on the 66 C, E, F & G models. This will keep the costs down if I can do this under one STC. It will do away with all the ram air rubber seals and the air filter on the above models and make them more in line with the J model. I'd like to find an option for the spinner, but if it's not already certified and fits certain dimensions, it can add 100 hours of test flights to get it certified as part of the STC. That would delay the project and raise costs, so it's a matter of where's a good balance in the cost vs benefit in the project.
It was great meeting and talking with Ned, Clarence, Yves, Andy, Johnathon, Vincent and many more.
Thanks again,
David