[joeydurango]

Contact is no good, as that prevents the shackle from articulating as it should. Your truck will ride rough and steer funny if you hit something hard squarely with the front wheels - the passenger side will compress more than the driver's side can, and it tends to jerk to one side.

I had a SWB with a 2.5" lift. I had to remove the part in question to avoid the issues I just described. If you wanted to keep it you could drill new holes in the frame and relocate it back a bit.