School me on leaf spring bushings. I have a '72 Blazer with a 4" lift springs up front. I have no idea what brand springs they are. I need to replace the bushings at the shackle end. They look like they are 1-1/4" in diameter. Do I need to watch out for what size to get? I thought I read once on this board that the bushing sizes are different depending on what brand springs you have. Is there any way to tell what kind of springs they are?