I recently installed the XCaliber Fairway Shaft in a 3 wood and love it. I was thinking of installing that same fairway shaft in a driver. Any reason why it wouldn’t work? I have consistency issues with any driver shaft less than 70 grams in weight. I will top 1 or 2 drives per round as I get too quick. So the weight of the fairway shaft in stiff (75 grams) is about right. The link below is the 3 wood shaft that works great in my 3 wood.