Engine Bay Prep:

1. Clean everything that you can’t when the engine is in the car also paint anything that needs it
2. Unplug the wiring harness from the MAP sensor and purge control solenoid
3. Remove the MAP sensor and purge control solenoid assembly from the firewall. You can set this aside as you won’t be using it on the new engine.
4. Unbolt and unplug the resistor from the left rear of the engine bay. You can set this aside as you won’t be using it either on the new engine.
5. Unbolt old catalytic converter and remove it (Only if you have a new one to replace it though)
6. Install new catalytic converter

Now is a good time to re-route any hoses or wires that are hard to get at when the engine is in the car. It is also a good time to take a leak or eat something. Now is a good time to take the air conditioning equipment out of the car if you would like to do so. Although it’s not necessary it will save weight and a lot of space.
Also you won’t have to modify the condenser fan to fit the D16Z6 exhaust manifold to your engine. I took mine out to save weight and get a lot more space in the engine bay. Plus I don’t care anyways about having it. I am building the car to go fast not carry parts that I will only use half of the year.