How do you get to the back plugs on the 3.3L V6

Hello, I cannot see a diagram of this engine for your vehicle, but I can tell you that it should take less than an hour to change all 6 plugs. This indicates to me that you can get to them without major disassembly of any components. On some vehicles, it's necessary to lift the vehicle even, and access the plugs from the bottom, reaching up. Hard to say without seeing the vehicle. Why don't you visit a local shop near you and ask about it? They can probably show you fairly quickly, giving you advice, and probably won't even charge for that. It's good to make a relationship with a local shop for things that might be beyond your capabilities at some point anyway. One more thing: follow your ignition wires to the rear and you'll find where the plugs are.