96' 460 F350 clutch problem

Afternoon all,

First time here for me.  I have been working on my vehicles when needed all of my life.  From front to back and top to bottom.  I have done several clutches in my time but never with a hydraulic clutch (master and slave cylinder).
I have a 1996 F350 with a 460 cu in. in it. 4WD as well.  Ithas 150K miles on it.  never replaced the clutch.
Question.....When I just barely start to let the clutch pedal off the floor the clutch hooks up.  There is absolutely no pedal left.  Down shifting has become a bit grindy at points depending on my speed.  Should I just get a clutch kit(clutch, pressure plate, and throw out bearing?  Or should I look at the cylinders first?  Not too sure how to determine if the cylinders are the problem.  if I have to purchase a kit, can someone recommend a good kit for the truck?  Where to purchase also please.
Thanks all for your time.

Sid  

Hi. I don't have a lot of experience diagnosing clutch issues but either the master or slave cylinder could be the issue. however, from what I hear from the experts I've consulted replacing just one or two clutch components will lead to certain failure in short manner. that said, i would go all or nothing unless you want to be dealing with issues shortly down the road. especially in a hydraulic system a new master cylinder should always be paired with a new slave cylinder to get the best results. for parts you could go with Motorcraft or your basic parts counter sale. a varity of heavy-duty clutch options are also available.