I bought some from autozone for an 86-up. The spring end are a tad wider than my springs, the frame mount end was a tad narrower than the shackle (I shaved the bushing). It sits right at 2" lower than it was. Only minus that I can thing of is I had to notch the bed on each side, no biggie for me though.....They are level with the bed floor.
Here is the before. I will take an after tomorrow in the daylight.
Here is the after. The previous owner had removed the thick leaf from the driver side and had me wondering what I had screwed up when I rebuilt the front end. Still has the 6 leaves with no thick overload, and standard shackles.