I have a 37 Lasalle, not original underneath at all! It has a chevy rear with leaf springs. I have a bad spring and want to replace them both. I have no idea what springs are on the car, nor does the previous owner. I have the measurements and all that good stuff, but my problem is "where to buy"? Most sites I have found want to know what car they are off of, but I have no idea. Where would you guys recommend getting leaf springs knowing all I have are the measurements.? Thank you.