wow.....first off....if your boot is torn....then that means the joint is contiminated. contaminated means that dirt and debris got inside...not to mention salt since it is winter. (if that applies) anyway....if the joint is clicking....then this means that the ball bearings have little pits and or not round from the debris.

your better off just buying new shafts. most come with a lifetime warranty which is a lot better then a lifetime warranty on a boot....if there is one. a new shaft would run about 50-70 at any local parts store.

if you did decide to go the "new boot" route......take off the old boot....there is a lock pin/washer on the inside most of the race/ballbearing combo. a "reverse" lock-pliers is needed. after the lock-pin wasjer is removed....grab a brass hammer and lighlty tap the joint off. some force might be needed but do not bang/dent up the race. the race is what the balls sit in. take out each ball which is going to be a tetris type style. they are in there in a mathematic way. clean each ball with solevant/gasoline. do not use water. installation is reverse of removal.

to replaxce joint......pull out old joint...put new in.

your call....you can see which one is way easier to do...and which one is less-time consuming...less messy....and which one comes with a warranty.