How hard is it to replace a clutch cable?

My clutch has been getting much stiffer in the last few months and I suspect that it is the cable. The car is a 94 Cobra with 201000 miles and original cable and quadrant. The clutch has been replaced a couple of times, it currently has a king cobra with 30000 miles. The engine is original.

I don't plan to replace the quadrant as it is in good shape and the adjuster works perfectly.

How much pain am I in for if I replace it myself?

Thanks.