Ways to make a f350 steer better.....??

[Powerjoken]

Truck in the sig. I want to know if there are any aftermarket products to help a f350 steer better? I have 240,000 on mine and I am rebuilding the steering box and replacing ALL the steering linkage because it is so horrible at driving down the road. It is WAY to tight and has a good 4" of play when driving straight. Compared to my 03' Dodge it is a nightmare to take a roadtrip in (for the driver, anyways).

So what are ways to help? Do they make things that help with it? Here is my mod list I am completing on it...
Rebuild steering box from Benchworks in Phoenix
New TRE's
Replace bent draglink
New steering pump

I'm hoping this will fix it. Any info on aftermarket help with these?