I believe your talking 2006 models,
in which case,
Faith 2 has 66VF2, which has dual SSVF adjustable damper rods,
1 side compression adjust, 1 side rebound adjust. Keep in mind SSVF has more stiction, and is generally not as smooth.
Faith 1 has 66RC2X which has Dual HSCV,
1 side Rebound adjustment, and Low speed compression adjust
1 side High Speed compression adjust
dual air preload.
The RC2x is a far better fork in many many ways to the 66VF2
regards
Juls