Class A steering stabilizer
I have used a SafetyPlus stabilizer on a '94 Chevy P30 chassis and currently using a TruCenter from BlueOx on a 2001 DP on a Freightliner chassis.
Both work well, went with the TruCenter unit as it can be adjusted on the 'fly' with a push button on the dash. The SafetyPlus unit was fixed or set on installation, which means you are shooting for the best average. With the TruCenter, you can adjust for the road conditions that you are currently experiencing, from excessive crowning of the road or high cross winds with just a push of a button. Again, it will adjust for steady high cross winds, but will not completely handle higher intermittant gusts. The TruCenter is a hundred or so more expensive than the SafetyPlus unit.