Sig 4-Stars can be bashed into almost any low wing plane. I did 2 4*60s into Kawasaki Tonys.

My buddy build a Macchi MC72 seaplane racer from a 4*40. The fuselage was widened and the top is from a Sig Skybolt. Looks different, but it's heart is 4*.

Next is a Morane-Saulnier Type N built from a Balsa USA Eindecker kit. The Eindecker was copied from an earlier model Morane that was captured. Morane then added outer bulkheads and stringers to get the rounded shape.