I am getting ready to extend my arms and was wondering what would be better for this application. Johnny joints or Heims i will be extending my arms with DOM and weld in inserts to install the heims or johnny joints. I do some rock crawling,trail riding, and little mud but I want this thing to get some better flex I am running a d35TTB with a lockrite and I currently have 4" of lift but bumping it up to 6" of lift