Just changed the plugs on my '96 V8 a few weeks ago.
Here's some advice you may find useful:
Remove the plugs through the wheel well. You have remove the flaps in the wheel well first but it's easy (just pull the fasteners straight out) and it gives you a pretty easy shot at all plugs. It would be impossible to remove some of the plugs from above.
Use a high quality spark plug socket with the universal joint built in (critical!!!!!). I bought one at the Home Depot (Huskey Brand) that holds the plugs very securely to minimize the chance of breaking a plug. It was well worth the $9.00. You will need a few different length extensions also.
The hard part was actually pulling the boots off the plugs. There is more than enough room for the socket in there but it's pretty tight to fish your hand in.
From what I have read on this board, I think we V8 guys have it easier than the V6's.
The wires were a little harder than the plugs but still no big problem.
Make sure you know where each wire goes on the coil and on the engine then remove them all at once, I found it too tight in there to do one wire at a time. This will help identify which new wire goes where (if they are un marked) by matching it's length with the old ones.
Re use all the old heat shields/guards, some of those wires are very close to the exhaust manifolds.
The most important thing is to inspect the wires a few days after installation to make sure they haven't shifted. One of mine moved next to the ex. manifold but I caught it before it was damaged.
I HIGHLY reccomend the Bosch +4's and Jacobs wires. They cost more but this was a 3-4 hour job & I don't want to do it again anytime soon. Higher quality materials will last longer and there was a noticible difference in performance.
