While it's apart I would install a new clutch disk, pressure plate, pilot bushing and throwout bearing. The best clutch option is to shop for a Perfection Clutch rather than the Auburn style many places sell. I believe Walcks sells the better clutch. There's no real way to tell if any of the springs in the clutch plate or disk are reaching the fatigue threshold where they are ready to break so for me, it's not worth having to yank the engine back out for the sake of $160. Just my $.02.
Larry