No, I would not get suspension for an extra passenger. I don't know what your experience is with winch bumpers, but the Calmini bumper caused my 2000 X to bottom out on every bump on the highway. It even changed the way it drove .I had to purchase stronger torsion bars and crank them up to keep the front from sagging. Calmini even suggested stronger torsion bars to me over the phone. My 2005 feels way more solid in the suspension department and I don't expect to have to change anything. I don't know the wt of the Srock bumper.