Hi Gary
The kit looks to be one cut from the plans that Ed Southwick, Ronnie Farmer and Myself did for the 52 inch version that was published in the model magazine right before the Sterling kit came out, The plane is accurate as I got all the info from Ed, there where many many long phone calls, Lots of paper shipped back and forth and even a couple face to face talks.
Ed did several sizes of his Skylarks, he even did a couple with SV-11 Stabs Elevators and wings in them. The Sterling kit was the 35 to 40 size, 52 inch or so, and the ones that Ed mostly flew where 56 inch span..or close to that.
Randy