There's one more option. I have a 5-speed with the valair upgraded slave cylinder unit. its the adjustable one mentioned above, $85ish BUT
Prior to this I had a stock slave cylinder assembly (one piece)
Not sure you want to do this, but it WILL get you out of a bind.
follow your slave cylinder cable/line to where it bolts to the transmission. should only be nuts over 2 studs (6 speed should'nt be much diff)
take those 2 nuts off and pull the rod out of the bell housing. (DO NOT PUSH THE CLUTH PEDAL) the steel rod should pop out of the line.
now you have a rod that looks like a screwdriver shank in your hands with a plastic cap on each end. take one cap off and extend the rod up to 1/4 inch. I welded small beads end to end to extend it. you can probably find a little pipe that slides over the rod with a cap on it to extend it....
in simple terms, make that rod 1/4" longer and put it back in. your pedal will raise, but if you make it too long your clutch will slip and not have enough pressure to grab the pressure plate and flywheel.
thats the only other option other than buying an adjustable one. But it will only get you on your feet temporarily til you do buy the adjustable one.