It has been a LONG time since I remember any conversation about the *PAMPA plane*!
IRIC, it was based either on one of Wynn Paul's or Steve Buso's planes. Not even sure if it IS a REAL model.
I like your idea, Gene. A 670, or so, sq. in. plane designed around the parameters of the modern planes with the ability to use pipe/4 stroke/muffled power plants. The plane as drawn in the logo would be easy to replicate and show the necessary nose configurations for each set up. Proceeds to PAMPA. Great idea!