The front ones are easy to replace...I had a PITA time trying to install the rear wiper. Keeping the arm in the proper grove was a challenge.
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Current cars: 2010 4Runner Shoreline Blue Limited 4X4 3rd row & Nav, 1994 RX7, 1978 F-150 4-WD (this is the work/mud ridin truck-needs some work though)
Cars owned: 1994 Integra, 1988 RX7 TII, 1987 RX7 base, 1990 RX7 GTU, 1985 Ford LTD (first car-biggest piece of crap).
FSM+EWD here