The poly bushings at the one end of my Metal Tech rear control arms permit A LOT of lateral movement of the arm when the opposite end it disconnected from the vehicle. This was an issue two years ago after running the MT arms for one year. I spoke to MT about the fact that the center sleeve fits very loosely inside the poly bushing and will fall out of the bushing when removed from the vehicle. This is not right but MT refused to acknowledge this and sent me a new set of poly bushings to shut me up. Two years later and I’m revisiting this as I try to regain some feeling of stability in the rear end of my 80 for over the road travel. Two days ago I called MT again, they listened to what I had to say and then took down my number and said they would get back to me. I have yet to here from them. So, I did a good bit of research and it seems that using Johnny’s Joints at both ends of a suspension link has been done quite extensively and with much satisfaction. The MT arms alread have a JJ at one end and they have done very well for me. After three years and lots of beating on rock, they are still tight. What I’m thinking here is to cut the poly bushed ends off my MT arms and then use a weld on JJ. These are not cheap but this route would be cheaper than buying all new arms that I know nothing about. Question: Have you ever run suspension links with Johnny Joints at both ends? What was your experience with this? How much additional vibration/harshness can I expect to feel in the cab?