Chris, here are the measurements that I get. All measurements are parallel to the root of the wing. There are 3 different pylon stations. The first one is the inner pylon, the rear hole is 5-7/16" out from the root and 2-7/16" from the trailing edge. the forward hole is 5-7/16" from the root and 7-1/4" inches from the T.E. The middle pylon rear hole is 10-9/16" from the root and 2-3/16" from the T.E. The forward hole is 10-9/16" from the root and 6-7/16" from the T.E. The outer pylon rear hole is 13-13/16" from the root and 2" from the T.E. and the forward hole is 13-13/16" from the root and 5-1/2" from the T.E. Hope this helps and good luck with your project. Just getting started on mine, I might need to ask you some questions sometime.