Figured I'd update on the Excursion since my fox is running pretty good and haven't done anything but wear down tires lately.
Swapped leaf springs from spongy, clapped out stock springs. X code springs on front, and what they call a modded B code on rear. Modded B is a C code, f250 rear spring, with bottom 2 leafs from stock pack added. Turned out amazing and rides and drives like a new truck. Couldn't be more happy. Waiting on my new tires to wrap my weld off road wheels in. Gonna be sweet......