I'm not aware of any tech pocedures so you'll just have to do the best you can. The rear plugs are a PITA but doable with the right spark plug tools.
My first tip is patience. Next tip is do not remove the dogbone engine mounts and tilt the engine to try to get extra clearance. The hardest part is removing the metal shields and plug boots. It is up to you but to get at plugs #4 and #6, it may be easier to remove the 02 sensor on the downpipe and the bracket that holds the 02 sensor wiring harness that mounts to the exhaust manifold. Since you are installing new wires you may have to cut or damage the old ones but thats no big deal. Also, use proper lighting like a drop lamp so you can see better.
These are the tools I use. The spark plug ratchet is specially made for plug removal.
During plug installation make sure you use anti-seize compound on the plug threads. Also, dielectric silicone grease on the inside of the plug boots or on the ceramic part of the plug.