We have done many MII ifs units into AD trucks and learned quickly that there is a huge difference between engineered ones and ones built just to sell. Never use the lower control arm type anymore but use the lower A-frame type. If you have a Port-0-Power get a "duckbill" attachment and spread the channel a bit. When you put the large bolt back in that the control arm pivots on it will draw the channel tight against the bushing.
