Helio H-1201T Twin Stallion roposed version of Stallion with two turboprops
mounted on underslung wing nacelles,retractable
undercarriage,wingtip fuel tanks and wing cargo
pods.
Aerofiles mentions a H-634 Twin Stallion 1968 with two 317hp Allison 250B mounted on a stub wing in the nose. One was built with registration N11038. A version with two 620hp PT6-A was planned. May be that was your H-1201T.
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