Rear leaf spring -forward Brackets

The spring Eye determines the size of the bolt. Usually 73 and newer are 5/8. The early pre 73 are 1/2. Unless superstock springs were installed and they were drilled. SS springs are 5/8. I have both sizes. Check the hole size on the spring or let me know what size socket fits the bolt. 3/4 socket is 1/2 bolt 7/8 socket is 5/8 bolt. I get $60 a pair shipped for a clean rust free set . They come with the oe Nuts with spin washers.