My E99 is terrible, depending on the crosswind, I'm 1/8 turn or more into the steering wheel either direction. Mine is a combination of worn ball joints and tie rods, track bar bushings and maybe a little bit of wear in the steering box.
For what it's worth, I just priced everything to rebuild the front end of my truck, to bring it back to new spec, and it's $1000 using Moog/Motorcraft/Timken components. I can cut the component quality a little bit and get it down to about $800. Both those numbers are before tax or shipping. I priced it all out because I needed to be sure I wasn't barking up the wrong tree wanting to swap to the '05-07 axles and steering. Thanks to my current setup, I'll need tires in less than 10k miles, and in 134k on my '05, I never had an issue with ball joints, suspension or steering components, other than a power steering pump failure, it broke the shaft internally and just quit working. Since the swap is bolt on, I'm upgrading everything including the steering box, especially since my research shows the E99 has the weakest box.
If you don't want to send your box off for rebuild, all the parts are available to rebuild it yourself. They aren't hard to rebuild, just takes a couple hours and a little patience, but you could DIY in a weekend if not a day, easily.
The Current Truck (Oct-2013 to Present):
1999 (Early) F-350 Lariat, CCLB, SRW, Black/Tan
7.3L Powerstroke, 4R100, 4x4, 3.73, 37x13.50-18s, '05 Axle Swap, 6" Fabtech lift, GTP38 "D66" turbo upgrade, SCT 4-position chip with custom tuning by me, Straight Piped 4" down pipe through 5" dual stacks, N-Fab full length triple steps, Pro-Tech cab guard and tool box, louvered 5th wheel gate, Hella 500 Fog and Driving lamps, much more to come...
The one I'll miss, (Mar-2009 to Jan-2014):
2000 Excursion XLT 4x4
6.8L V-10, 4R100, 4.30, 285/75-18, 271whp / 388wtq
The one I won't, (Jul-2005 to Sep-2012):
2005 F-350 XLT, CCLB, SRW, 4x4 FX4
6.0L PSD, ZF-6S650, 3.73, 35x12.5-18, 4.5" Lift
Last edited by IdahoF350; 08-18-2014 at 07:30 AM.