Do you have the XHD leaf springs on your car? It you've never replaced them i think the non R/T's had a couple less leafs on them.

I used to have traction bars on mine when I had my old leaf springs on, and it made a huge difference. Now that I replaced by mine to the XHD, i didn't put traction bars back on. I've only ran it hard a couple of times since the replacement, and I have very little wheel hop.