Great that you've found the issue. I had a tough time finding a clutch/brake assembly. So, few manual transmissions in the JY.

You have two options now, after you locate the clutch/brake assembly:

Replace the entire clutch/brake assembly.

Or, just replace the clutch pedal - your brake is fine - by pulling the pivot bolt, sliding the old clutch pedal off and replace it with the new. If you go that route (which I did) make sure you run a bolt through the brake end as you pull the bolt out so that it doesn't drop down. Make sure to check the internal bushings in the tube that the pivot bolt slide through. The replacement pedal I got had a good deal of rust in there and the bushings were sketchy looking. I cleaned it out with a little fine grit sandpaper and lubed it with some white lithium grease. Works great.

Also, be careful slinging wrenches around in the footwell. Lot of wiring there. Patience was the key for me, and I still almost screwed up a connection.

You'll have her back on the road soon.