I am 65 yrs old.....a 4 handicap....98 swing speed.....I play the 913d2 driver. I really like the driver..it has the Aldila RIP stiff shaft..Looking for a little more distance. Just like anyone my age. Trying to keep up with the young ones. project X makes a shaft for this driver....????....Or maybe the D3 head. Any suggestions? Thanks, Richard