i am undoing an early 80s attempt at mustang II suspension on my 37 Chevy coupe . i have a stock beam front axle and springs with new shackle bushings and pins. i do not have the the shackles for this axle. can i get someone on the board with a 37-38 or 39 Chevy passenger car to measure their front spring shackles and tell me all the measurements so i can fab up a set? i mainly need the center to center length between the holes where the shackle mounts to the frame bracket and springs. Thanks!