My friend needs the left front spindle complete w/brake. He'll both buy both sides if needed. The spindles are a pinch bolt top, not a ball joint. He might have to change the upper a arm and go that route but not yet.
The difference between the '88-'89 spindles and all the rest is the lower ball joint mount... All blasters have a 14mm pinch bolt upper ball joint mount.
The '88-'89 had both upper and lower pinch bolt mounts.