Hi -- I've got an opportunity to pick up a 1990 F-150 Extended Cab
4x4, and the rivet in the crossmember behind the steering box has come
loose, allowing for a visible amount of lateral movement when someone
moves the steering wheel side-to-side.

A cursory look has ruled out any major cracks at box mounting points,
and the web has provided a fair amount of material regarding this
fix.  It'll certainly be tightened up by punching this rivet out and
replacing with an oversize bolt, that's familiar territory to
me......but is that all I can do?  Surely that single rivet can't keep
all the movement in check.....anybody's experience in this matter
would be greatly appreciated.

Thanks -- Jon

Just for reference:

http://www.supermotors.net/getfile/520094/original/steeringcrack.jpg