I just did it on a 92 - not really tough but time consuming. I had no trouble getting the wires off or getting the plugs out. To me the hardest part of the job on a 119 motor is routing the wires - it's sort of a spagetti setup in tight quarters. Everything has to be right in just the right place or the black distributor covers won't snap back on. You might want to price it all before you do it as preventive maintenance.