Things you need:
In tank fuel pump. I had mine on the frame and it didn't do the job
you can use cable throttle. I have DBW and its awesome
Upgrade the cooling system. Larger radiator and find an early 90's ford Taurus 2 speed fan. It.has more cfm than most aftermarket
Novak weld in mounts are nice. They give you more freedom to do what you need.
For headers, I was able to keep the stock ones due to my body lift. I want to say Camaro headers will work. Check the year
As for the year motor, I think in 04 or 05 the fuel system went to no return. That's just less plumbing for you. I used -AN6 stainless lines
Wiring isn't really that bad, but if you don't want to bother, there are plenty of shops online.
The computer needs to be reflashed to remove the anti-theft and any emissions you don't need. The programmer should know what you need and don't