traction bars should be pushed forward up under the leaf spring mount, not under the spring itself.
The operative and key word here is SHOULD. Since most slapper bars are sold for GM F bodies, they tend to be sold in lengths that bolt directly on to these cars. Sticking them under a mopar means they end up in some position other than the optimal. Now, I don't doubt that back in teh day some manufacturer somewhere had taken the time to measure and layout a set up that would work properly with differing mopar applications, but my bet is that most have not and do not take that into consideration and most of these are sold as a universal application.
You can get direct fit units...they are 3-4x the cost of the uni's.
