The clutch cable isn't hard if you are a short, skinny guy.

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If you aren't, be prepared to stuff 10 pounds of coffee an a 5 pound can or remove the driver's seat. When you remove the driver's seat, there is more room, but you will need to put some plywood over the seat mount studs that stick up from the floor. If you don't, they will definitely scratch up your back. Big hands don't help either...I have been told that it is much easier if you peel the carpet back from under the clutch pedal.
The binding common to adjustable cables is often due to misplacement of the adjusting nuts on the fork end of the cable. Both nuts should be on the back side of the fork so that the domed nut faces the fork and the other nut serves as jam or locknut to the domed nut.
Have fun and keep lots of Band-Aids handy – you may need them.