i have heard 1" adds 6mph to the swing and you get about 2.2 yds per mph (if hit correctly) so thats 13.2extra yds....

i never understood peoples beef with longer shafts. USGA allows 48" so that is what i have. if i were to need the acuracy i could always choke down on it 3 inches to the norm 45". but i never need to.

i don't see how it affects acuarcy. your swing plane might be a little flatter adding more sidespin on an off, hit, but that is all i see. you can get an off center hit just as easily with a 45" than a 48".

i don't think that little bit of torque change would make a differnce.

only problem is you can't get a regular shaft that long you have to get a long driver shaft cut down. they usually come no more flexable than xstiff. which i think you can handle since i think i read you have driven 397 before.

another down side for me..... i have to take my driver out of my bag before putting my clubs in my trunk becuase that club is too long lol