ive done two on 94-04 models, both are straight forward, you just need a few tools/items that you may not have but are required. I wrote a how to here on the forum. If you have any specific questions I will do my best to help get them answered
article location: 94-04 CDC Light Bar Installation - Mustang Evolution
I would go with Classic Design Concepts directly (they make Saleen, Roush etc they make them all). Call them and order one WITHOUT the ugly badge they stick on the drivers side bottom, they dont charge extra for that either. If people ride in the back seat buy the switch that keeps the 3rd brake light off when the top is up or order the light bar that has no 3rd brake light.
The color MAKE SURE YOU get the right color!!!!