You don´t actually have to take apart the engine itself. The easiest way to do it is disconnect the tranny from the engine and pull it (the transmission) out of the car to get to the pressure plate/clutch and replace it that way. The time it takes depends on your experience with it.
My 94 gt took me about 5 hours to replace the clutch. It is actually not that difficult if you think through it and look at what all needs to happen first. The first time I did a front wheel drive clutch took me a day now it is easier.