Depending on where you're at in the work, you might also want to pay attention to how those mount to the frame rails. Some people have reported the bolts tearing the sheet metal if you're a spirited driver, or you have an oversized bar or stiff bushings. If you're a cruiser only you probably won't have an issue.
I wondered the same thing when i was installing the rear shocks, wouldn't the upper bolts have the same issue ?
