Hey Perry,Glad you got involved as soon as MOPAR was mentioned guess who came to mind.you told me about the challenger what else is in the garage? And I guess i should mention that the size and type of wire determines it spring tension strength,and the Asiatam spring tension rods are a very small gauge but seem to be very rigid,if I push a control arm to the stop it spring back perfect every time and they sell the rods seperately so maybe you could try the Asiatam torsion rods?