Well, this will make me sound like a complete idiot, which I am but i'm slowly learning

l. I had my ZTS for two years bought it brand new and I just found out 3 days ago that I had the 2.3L duratec engine and not the 2.0 zetec. I was both dissapointed and happy about it. I had more HP so that is always good but I did all my research on the zetec engine :-(. I was like 2 days away from buying the supercharger kit for my engine when my dad made me go check the engine out. He told me he bought the sports packages for my car, it came w/ spoiler, bigger engine, bigger wheels, better sound system, etc. I dissagreed of course, and so I went check under the hood and sure engouh I had the 2.3L engine. Well, that is my story and I guess i can ask my questioons now

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1. How much does the 2.3L produce? (I heard 145)
2. Is it 16 valves like the zetec?
3. Why is the engine so messy? Is there a actual purpose for all those wires and hoses? (Me and my friends just figured that it was for all the sensors).The zetec engine is nice and neat. I showed my friends my engine and they laughed cuz they said they seen modded cars with less wires and tubes running across their engine. Fine, example of this: When I had my hood poped open today a guy walked behind me and my friends and said, "Nice engine, do you have a turbo or nos in that" I just smiled at him, laughin inside my head when it was completly stock.
4.If I add a CAI and Exhaust System to my car would be able to handle the little horsepower gain it receives? (my car is a atx)
5. Is there anyplace I can download a diagram of our engine with it lables.
Well, thats it for now I know im gonna think of a couple once i walk away! Thanx for any replies, you guys are usually great at helping me out

Thanx again love this community!!!!!!!