traction bars?

1977 Dodge Aspen r/t ..I ran air shocks, 3;91's sure-grip 8 3/4 , 1968 stock motor,tnt 440 w/six pack set up, stock exhaust manifold through the mufflers, 3500 stall, reverse manual valve body...13.45 1/4 mile times w/radials
75-80 Dragway. fun car. hooked up better w/radials then slicks...