The Messerschmitt Bf 109Z was an actual prototype. It was constructed from two Bf 109F fuselages, with the intent of producing a new heavy fighter and fast bomber design without interrupting production lines. The aircraft was destroyed in an Allied bombing raid in 1943 before testing could commence, but performance estimates were impressive. The Germans produced another Zwilling aircraft, the Heinkel He 111Z glider tug, and many more designs were given the twin treatment on paper. On the American side the F-82 Twin Mustang saw combat in Korea. Modelers have found these hard to resist and there are a great number of “whiffer” models based upon twinning two standard types.
This is the Amodel kit enhanced with several spare parts from Fine Molds Bf 109s. The biggest change was substituting Fine Molds cowling pieces to beef up the noses.