New Clutch Fork Assmebly Needed?
 

I have an 03' G35 Sedan 6MT and plan to replace the clutch and flywheel to the Z1 Motorsports combo the have on their site. I also stumbled upon the upgraded clutch release fork kit:

clutch fork kit

Is this new clutch release fork worth it? How long would it take to install? Also, how reliable is the Z1 Motorsports clutch and flywheel?