Pulling the clutch out of most cars is a PITA but you will get more out of it by tackling the job yourself. I'd be hunting down a clutch kit with a higher load rated pressure plate if you're going to be working your truck hard. You may need to have your flywheel machined too depending on what the truck has already been put through. I would take a stab at this by saying this is an 'engine out' job. I'd think it would be easier than dropping the 4x4 transmission out from underneath it (haven't done a 4x4 myself but there will be plenty on site that would know the best route to take on this)