Traction Bars?

BINGO! it seems that the design of traction bars just gets in the way of the inherent design of mopar springs, which work like a traction bar in a way...

Yep, Mopar leaf springs are different than Brand X springs. The part of the springs in front of the axle is shorter than the section of springs behind the axle. Brand X leaf springs had the rear axle in the center of them.