They have the poly bushings and I needed new ones! I also got the ball joint socket,upper control arm bushing tool and the lower pivot shaft tool at the same time I figured what the heck! Ordered it all together and liked the idea of maybe being able to gain some adjustability in the arse end of my challenger w/mp hd springs just in case the springs settled to low.
The last time I bought shackles they were 70/pair for the standard bushed ones so an upgrade couldn't hurt or so I thought. The original springs and shackles were shot and someone installed air shocks to remedy the prob. I put the KYB shocks with this new setup and the ride is much more responsive now all good except the shackles.. Just a heads up for everyone else learn from my mistake.
TOM