The pros are improved handling, The cons... Well, To be honest I don't know any save the cost.
And I agree, the track bar will most likely help
Track bars (Pan-hard bars) control wag (Side to side sway Sway bars control side to side TILT (rocking) I put both a Blue True Center steering control and a Davis Tru-Trac on my W-22 and now it drives nicer than my car.
Nothing adds excitement like something that is none of your business.
2005 Damon Intruder 377W Radio Active as WA8YXM