it was hopping before i took them off, they were rotten hardcore. and the difference between upper, lower control arms and the torque arms i am talking about are the torque arms are triangular with a tie rod making up one side. i had those on for 1 day and took them off. they have a rubber bump stop in them to brace in the body, and one vertex point clamps on the rearend. i will try to get some hotchkiss lower control arms one of these days then. thanks guys.