Hi Scott, thanks for the plug...
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>
Quote, originally posted by brettmess24 »</TD></TR><TR><TD CLASS="quote">I guess what im really wondering if I can buy the axis full float iron rotors and fit them with my 40mm single pin calipers or if I should pick up a set of twin pins and a gp master cylinder.</TD></TR></TABLE>
The Axis rotor answer is yes. They are the same discs for 40mm and 65mm.
With the "superlight" rotors that preceeded the Axis, there were 3 different blades. One for the 40mm mount calipers, a slightly narrower one for the 65s, and then the "narrow band" ones for bad ass calipers.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>
Quote, originally posted by brettmess24 »</TD></TR><TR><TD CLASS="quote">I have been debating this for to long I really hate my old school brakes and want a hella of a lot more braking power. do you guys think that the twin pins are much better than the single and are the four pads that much better than the twin pins. sorry

</TD></TR></TABLE>
My 96 916 had the 40 mm single pin calipers, and with the BT iron rotors & 19x20 GP pump, the brakes were amazing. And that was with the old school Ferodo CP901 pads (much like today's "Platinum" pads).
IMHo, the difference between 40mm single pin and 65mm twin pin calipres is not worth the hassle to change the forks.

Chris