I would still get fitted using your EXISTING clubs, you may find that only small tweaks are necessary such as loft or lie adjustments which are easy. On the other hand, if you discover that a replacement shaft is needed, depending on the shaft cost which is sometimes nominal, you can just change out a shaft such as on your new D2 driver. I do this periodically just to ensure I am utilizing the best shaft for my game since I have the moto of "NFA" (No Foolin' Around) for my equipment.

Just some random thoughts, but I WOULD get fitted regardless by a Titleist Fitter...other fitters are sometimes encouraged to place you in specific company products which is not going to help you if you want to make your current investment pay off!

Good Luck!

I second Chris92009's comments. I guess it all depends on how important your game is to you. I recognized an immediate 2 stroke improvement in my game that quickly turned into 5 strokes and I changed manufacturers all together. The pros at the Oceanside center were amazing to work with and the facility is second to none. Just the experience alone is worth the time and money. Oh, and you absolutely can be fitted with your existing clubs. They may not be the perfect fit, but it will be better. Enough so that you'll know you're due for new clubs much earlier than you may have planned.

thank you!

Make it 3 in a row, I had mine fitted to 1/4" longer & 2 degrees up and now my ball strikes are more consistent in the sweet spot of my irons (AP1 712's) & had my driver shortened to 45" (910 D2) I now have a better ball flight with more accurate shots. So go get fitted as soon as possible to start improving your game.

As the others have alluded to, you can definitely get a fitting done...definitely length and lie. A few things you need to take into account are: 1) Make sure the repair shop is reputable. Recommend a Titleist authorized dealer including/or a large place like Golfsmith, Roger Dunn, etc. 2) You should only get the irons bent once...so hit a few irons with the fitted specs before having them do the work. Once bent, if you end up wanting them put back you risk softening the metal. 3) Lengthening (add or subtract) usually requires new grips. A little added cost. Before you pay and have the work done, take the time at a shop to get a better idea of how it will affect you. I'm 6'1" and, with my arm length (wrist to floor), I played with 1/2 over and 2 up fitted clubs for the past 20 years. I just bought some used AP2s, standard length and lie, and brought them in to ask about confirming my fitting was still good (I'm older now) and to get the work done. Surprisingly, I was recommended to stay at standard for now...I was hitting the ball dead straight and with good trajectory. The risk was that changes would accentuate my natural tendency to draw/hook. Fitting is a good idea though...even if the end result is you don't need the fitting...at least you'll have more confidence when looking over the golf ball! Most places will do a basic toe board and measurement test for free...more (e.g. taking time in the simulator) may cost a little bit (like $50 unless you're getting a full swing analysis at GolfTEC or something).