the later year Fords do now come with heavier suspension components which means steering stabilizer and shocks may be OK as-is. (See Fords website on E-350/450).
Linda and I bought our 2006 used 2100 at the factory in June. ......to Glacier National Park in the spring and summer.
I had initially considered ordering the 2350 on an E450 chassis but was cautioned by forum member Ron Dittmer on the rough ride I would be in for with the small coach on that chassis.