What would be the best speakers for my truck?

I have a 2003 Ford Lighting SVT and I'm planning to install some good speakers. I don't know what's a good car speaker brand. How many speakers should I put or amps?

I would change your door speakers and get some subs like 2 10's or 12's. Some good subwoofers to get would be kicker Solobarics, Rockford fosgate punches or cerwin vega stroker. When you buy an amp make sure you look at the RMS which is the constant power. Don't just look at the max power. For example, An amp could be 2000 watt max power, but 200watt rms. You'll only get 200 watts out of it.

Probably truck speakers