Hi Neal, 

The 913D2 is 460 CC with a shallower face designed to produce slightly higher spin and launch. The D3 is a slightly smaller head (445 CC) with a deeper face designed to produce lower launch and spin.

Hope this helps.

Bubba

^^^ Yeah what he said!

Bubba,

Do the characteristics of the 913 D2 and D3 driver that you described for Neal change depending on the shaft you install?  Meaning, if I get the 913 D2 which promotes higher launch and spin but put a low spin shaft in it with high kickpoint will that change the characteristics of the 913 D2 that you described?

Hi Tim, 

In a word, yes. While driver heads are designed with certain characteristics in mind, it is the combination of length, loft, shaft and head model that make up the overall performance. A 10.5 D3 will almost certainly go higher than a 7.5 D2 (not always, depends on the player). Because of this, it is important to be open minded when heading into a fitting. I fit a lot of individuals into heads they thought were not right for them simply because a certain combination worked best.

I hope this helps.

Bubba

I have the D3 and it's a beautifully-hitting club.  Even when you miss, you have something decent you can work with.  When you hit it solid it's a joy to behold.  I saw a quote somewhere about these clubs somewhere that keeps coming to mind, "Designed by DaVinci, Built by Michelangelo" .  The club will impress you in that way. 

Bubba:  I currently play a 910D 3 9.5* (10.25*) and am considering changing...have not decided on loft yet...thinking I might could use a little more mass and foregiveness....needless to say, I will go for a fitting.....currently I am using a Diamana 'ahina 72 shaft and also considering dropping down a little in that area......any recommendations, prior to going to a titlest demo.....my other shafts for my F, and Hs are 80s and 82s and stiff.....thanks....chuck