I'm using mostly Kenwood stuff. Infinity makes outstanding speakers if you really want good sound. Head unitvis all in what you want. It's a personal taste. I picked the Kenwood i did because i could change the colors the way i liked. I would personally find a 10 inch sub. 8 is almost useless. Pick good quality stuff and you'll never have to change it. My Boston acoustic sub is ten years old, had it in 3 vehicles so far and works perfect. All in all, anything you get is a major upgrade and you'll love it compared to stock. Even if it's nothing but Wal-Mart stuff.
1999 silverado rcsb. 6.0L and. T-56, Hurst short throw, 4.11s, auburn limited slip, 3/4 drop, Nelson tuning, Texas Speed 233/239 .595"/.603" Camshaft, Kenwood everything, electric fans, custom made hood, custom tailgate, magnaflow 3 inch true duals, hooker headers, and too much money.
Soon- wheels and tires, Ford 9 inch with 5.13 gears.