Titleist 913 D3 driver is similar to the 910 D3
The centre of gravity is in the same position as the 910 D3 so if you strike consistently out of the middle then the 913 version may not be worth an upgrade. Compare to the 913 D2 driver the head is smaller at 445cc and this makes it a little more neutral than the draw bias of the D3 and and easier to work, should you choose to do so.
The market leading Sure Fit Tour hosel is the same as before and offers a loft and lie range of up to 2.25 degrees. This enables you to get the correct settings and shaft to maximise distance and accuracy from your swing. Make sure you get fitted by a Titleist fitter as this will help you get the most from your fairly considerable investment in this excellent driver.