How simple (or not) was the install? I got some Bosch +4's and Ford Racing 9mm wires. Do I need anything besides the basic 5/8" deep socket and extention to do the swap? Upon visual inspection, most of the plugs look easy enough to reach, but what about cylinder 3 (driver's side rear)? Please don't tell me I need to pull off the intake manifold. Any help is appreciated, thanks!