I've never had issues on the Ford. The Solera is a really light suspension. Has a lot more sway than the Ford.
having said that, the biggest improvement you can make is dial in the alignment. I can drive one finger on the wheel when it is within tolerance. Ford beefed up their sway bar a few years back anyway.
If you really feel the need to upgrade there is a product called E-Z Ride by Lippert that I can vouch for...reduces sway and bounce. I don't have any experience with the steering stabilizer that a few on here have installed.
PLEASE do not send questions via Private Message, my inbox fills up too quickly. Post questions in the forum as a new thread so that other users can benefit from the answers. Use Private Messages for sensitive information only (VIN, Contact info or things you do not want the public to see).