Hello Mark, I`m missig a top dzus fastner cowling for an early`46 t-craft. I measured the bottom cowl from front to back and it`s 21 5/16" on one side and 21 3/8" on the other. The distance from the front edge to the center of the first dzus was 2", the distance to center of the 2nd dzus was 10 11/16" and the distance to center of 3rd dzus was 19 3/8" on the right side and 19 1/2" on the left side. Is your cowling close to these measurements? It seems no two are the same, this is t-craft cowl not a replacment.Also how much are the nose ribs and the false ribs and the wing trailing edge. Thank you for your time. Sincerely, Murray Holcomb, Palestine, Tx.