I was wondering if it would be worth the money and effort to put in project x shafts in a set of RAC LT irons. I love the irons but they are over 10 years old. I have been looking at the TaylorMade Tour Preferred CB irons. They set up and look my eye to be very close to what I have now. Just curious if the old head technology will mix with the new shafts. I just read an article here how to reshaft your clubs so i would try this project myself. I have no clue as to weather or not it would be worth it.