Help with a Pitts s2 69 inches

Paulobrasil

Junior Member
A friend asked to transform his plans form pdf to vector his send me a plnas bur it has no indications of sizes I now it will be a plane 69 inches wing span but could not find the chord size to fit the right size or the cuts for the others parts.

Does anybody knows the size and model for the airfoil for this plane? I´m drawing a symmetrical airfoil.

Regards.