Hi Brett Buck,
Thanks for the information, I,m working with Max M. from OPS so we can design what we need in a engine, if you are willing to work with us I'm sure we can get a few engines to test for Max, the .40 will use the same case as the original SPA, but all other parts will be new and much improved tolerances and material from the 80's, On the timing I will email him Monday however I would like to go back to him with some numbers, feel free to give me a call on this project for OPS my work number is 203 383 6483, I'm a engineer for Sikorsky aircraft, My home number is 203 452 9586.
regards,
George Buzel