[JoeC]

Motion only used the term "Phase III" as sort of a model name. This was used for all years. Some of his literature mentions ordering the engines as Stage I or Stage II etc. I don't believe the "Stages" were used much because the parts list changed as new and/or better parts became available. Motion would build the car how the customer wanted within certain guidelines based on Motion's experience. The cars were set up similar to the Motion M/P drag cars. IMO