I'd like to know if anyone has installed the Henderson Super Steer Rear Trac Bar on a Chevy P-30 or P-32 chassis and did it help to control the Steering from the tail wagging the dog axle shifting. Thanks, Gummy

Not a P-30 chassis, but a Workhorse W22 chassis.  It made one of the most significant improvements of any upgrade I ever did to my gas motorhome chassis.

I found it tracked better, got rid of the tail "wiggle" and significantly reduced the blowing around by passing trucks.

I would not hesitate to put another trac bar on if I get another gas MH.

Best Regards!

We also put tracbars on our W-22 and saw wonderful differences. We put both front and rear IPD (now RSS) tracbars on. We started with a rear one and it kept us from being pulled towards a passing truck. The front one got rid of loose steering when a truck passed us. I assume a Henderson's would work as well.