Quote Originally Posted by J!m
Get generic spring perches and weld them on to the new axle tube to align with the series frame. ...
Gee, why didn't I think of that . All kidding aside, I'd have done that if it were feasible, but it cannot be done with full width axles. You'd have to weld one of the spring perches right on top of the pumpkin. Your two choices are to either shorten the axle width or outboard the springs.