Djdawson2 at aol.com wrote: >I installed the 28mm front bar from the 4.2 V8q Did you notice any roll stiffness difference in upgrading from the stock 27mm to the 28mm bar dia? Off hand the change seems trivial, but in fact it should be 15% stiffer. (ratio is proportional to the 4th power of the diameters) Now you need to add one to the rear. Bernie