Hey Guys,
Im new to the forum and I want some advice on where to start with my truck... I'm 17 I have a 1999 GMC sierra 4.8 and everything on it is bone stock when it comes too the engine... I have a decent paying summer job coming up and I want to start doing some mods to my truck soon... I plan on keeping this truck for a while, it has 76k...What should I do first?