The Piper PA-12 Super Cruiser is an American three-seat, high wing, single-engine conventional landing gear-equipped light aircraft that was produced by Piper Aircraft between 1946-48.
Crosswinds S.T.O.L. has the following Piper PA-12 STCs
SA653AL PA-12 & 12S Normal Category Only
Installation of 0-350-A2B OR 0-350 C2B Engine,
SENSENICH 74DM6-0-52 Propeller,
Drawing 12-2 Sheet 4-7 And Airplane Flight Manual Supplement.