although your post seems to indicates the clutch is not engaging? I have a feeling u mean that its not disengaging to allow shifting, is this correct?
I think it sounds like the Clutch slave cylinder is shot.They go exactly like that. not too hard to replace. Ive done a few.
A clutch does not wear out like that, its very gradual. Ive got 235K on mine and she is just now slowly starting to slip. It takes many miles for the Clutch disc to wear.
Here is a pic of what the part looks like.
http://www.prostreetonline.com/catal...slavecylinder/