I have a hydraulic setup on my 72. The pedal is very easy to push.
I used this master cylinder/linkage setup
http://67-72chevytrucks.com/vboard/s...d.php?t=652871
For the clutch side I used an 85+ square body hydraulic clutch aluminum bell housing, slave cylinder and clutch fork with a 12” LUK clutch kit for a ‘72 K20. My truck is a 4 speed, but this setup would work for the three speed as well I would think.
Posts 135 and 136 here show some of the parts I used.
http://67-72chevytrucks.com/vboard/s...=662879&page=6
Posts 159-162 here show some pictures of it installed as I was plumbing everything out as well as a parts list.
http://67-72chevytrucks.com/vboard/s...=662879&page=7
Here are a few pictures of the master cylinder/linkage installation on the cab.
If you are interested in this setup, I’ve got several hydraulic clutch aluminum bell housings. I would be willing to give you one for free if you pay the shipping. I’m sure that’s not an easy to find part in Sweden. I could probably help round up a few of the smaller things like the fittings and lines and ship them all together if that wild help.