Trying to tidy up under the hood on the Cobra replica roadster. Engine is a 5.0 EFI from a 90 Mustang GT with Mass Air.

So far.. I have removed the EGR valve, and will be putting a block off plate on it. I have removed the EGR block water hoses, plugged the water spigot outlets on the heater pipe, and top back of head, I put rubber, vacumn line type block off boots on the water spigots on the throttle body. (are these ok for that use?) I have plugged the holes on the back of each head. I have the EGR delete resistors plugged in. Air pump bracket, etc. removed.

Now,

As I am not using the charcoal cannister vapor return system, (it is simply being used as a fuel odor filter at the rear) so I pulled off the vacumn lines, and switch, and plugged the appropriate spigots off the plenum. Can I simply cut off the harness electical connector that went to this vacumn switch, or do I need to splice the wires togeather, trick the computer, or anything else having to do with this? (The plug on the harness for it, is the one just off the EEC coolant temp sensor, at the front of the intake manifold. Currently it's just dangling there..)

I have the stock valve covers, with the spigot on the oil filler tube. Do I leave the tube in place that goes between the spigot and the throttle body, or do I require a breather type cap, and plug the spigot on the TB?

I still have the PCV valve, and tube in place, as stock. Do I leave it as is, or is there some mod required in this area? If so, what do I need to do?

The large black plastic vacumn junction, that usually sits on the Mustang firewall. Can I simply delete that and plug the line on the plenum? I am not using power brakes. Do I need a vacumn for something else, that I would need to keep it?

Anything else I need to delete, or mods required since deleting these items, that I should be concerned with??

Thanks, Bill

P.S. In the future I will replace the large EGR block, with an aftermarket plate, so I do know that this can be deleted, in case you were going to mention it..