The F2B kit doesn't have anything to do with the transmission itself, just the clutch pedal assembly, as far as the trans if you have an LT-1 in your car then an LS series trans will not work. The input shaft is different length. Hope this helps.
Yes you will be fine. All 4th gen F-Body's use the same master cylinder, and thus will work with the F2B pedal brackets. It's the hydraulic line and slave cylinder that are different, so you will need to purchase LS1 car hydraulics, but for the pedal, you're good to go.
Yes it will, the clutch pedal assembly is the same between the years and the master cylinder is the same as well. Make sure the you get the master/slave assembly from an LS car as they are different from an LT.
There is quite a few that have used it, I personally think that it is well engineered and though out, saves time mainly. Can you make your own, sure, but to have some of the cussing involved in the installation out of the equation, I think that it is well worth it. Go to the link that I posted above and download what I wrote up, if you haven't already.
No problem man that is what we are here for, you can almost guarantee that the last swaps that have been done in probably the last 3 years have used the F2B kit, with the exception of someone finding a used BBHP kit or fabbing up their own. Yeah the 425 that you lay down for it is like a kick in the balls, but it is easy to install, in reality, no clutch reservoir inside that cabin, etc. Are there somethings that I would change about it, maybe but it is well thought out.