My truck has a 4.3L CPI engine mods are a Hypertech chip, cold air intake, accell coil and plug wires, flowmaster exhaust, and an optima battery. Visual upgrades are Boss 20 inch wheels, euro taillights, clear signals, and corners, two layers of 5% window tint, white face gauges, black grill emblem, and a 2,4 drop. A stereo is in the works so all I have is a sony CD player lol.