John, I have a 2003 38' coach on WH, BEST THING SINCE SLICED BREAD.

I did change out the shocks and added a
track bar on the rear suspension.

I have added other things but this will get you started.

I'm just and old guy that spends money as you can see by my list.

You should check the under side of you coach and look at the shocks and see if there might be a bar already in the rear. If it is not red it maybe blue from Henderson's my shocks are blue yellow Bilsteins. Your coach is 33' long wheel base should handle just fine.