Ford F53 Suspension

I've done similar upgrades to chassis on mine as well, with similar results as listed here. My very first suggestion (outside of proper tire pressure for weight) is to check/change the sway bar bushings. On my rig, they were completely gone. I replaced them with the poly bushings and it made a world of difference in the body roll. Next, I added Firestone Ride Rite air bag helper springs to all 4 corners. Another big help in handling and ride quality! Next, I replaced the worn out leaf springs on all 4 corners and replaced the Bilstein shocks. A slight improvement overall by doing so, but a necessary repair since my springs were so completely worn out that they were in a negative arch and teh shocks were shot. I now run about 60psi in the driver's side air bags, (HEAVY side/slide side) and about 20psi in the passenger side and overall the rig tracks straight with very little steering input. About the only things I haven't done is a steering stabilizer and track bar. Might do that next season.

You may want to consider an alignment as well. I tried to get a truck shop to align mine, but they wouldn't do it citing that the king pins were worn enough to lose the alignment in short order. They said there was no safety concern, but they couldn't guarantee the alignment without replacing the king pins, and didn't want to take a chance at it reflecting on the quality of their work.....which I can totally understand. Plus, I didn't want to spend the money and have it go back out after a few hundred miles. I compensate for the king pins being slightly worn by keeping the front end packed with grease frequently. That's also another good thing to increase handling/decrease wandering.