Another case of "don`t build `em like they used to"
The old Superiors/etc. were built right, just as solid as a top-tier Cadillac oughta be, if not moreso.
The older ones drove like...well...Fleetwood 75s carrying more weight from the middle back. Fairly stiff suspension upgrades s to (primitively) improve load-carrying capacity did help with the (unladen) handling a little bit.