So I broke the shaft of my Ping Rapture Driver about 2 months ago after slamming it on the ground. Got fitted, and ordered the Titleist 910. This driver has a weight port which they use to vary the swingweight according to shaft length. I have mentioned seeing the Titleist rep and getting fitted for 3 wood and hybrid. He suggested shortening my Driver to 44.5.
I used to build clubs back the early 80's when Maltby go going. I still have all the tools. So when I ordered the 3 wood and hybrid, I also ordered the weight kit. Like Richie says, it's simple. Measure, tape, cut, and re-grip. Bringing the swingweight back up is either a heavier weight in the case of my 910 and similar designs, or lead tape on the sole, or have a shop add weight inside the head or in the tip of the shaft.
When Richie reported on products from the show, he mentioned PURE grips. I have changed to these grips. My previous attempt at blowing on grips failed because the grips would twist on the shaft over time. These do not twist. It is much, much easier to pop grip on. Go hit it. Pop it off add some wraps, pop it back on, etc. etc.
Does my shorter Driver feel different? Not much. Does it feel different than the Ping at 45 3/4? Yes, very apparent.