Would it be smart to upgrade my fuel injectors and fuel rails? And if yes witch fuel injectors should i get and what fuel rails also and wr can i find them?

 

You will need to determine a realistic power goal when you are done. You need to get injectors that will not be maxed out to achieve that goal. You will need to get your tune modified. Determine who you want to tune it, and ask them what injectors they suggest you get. Injectors are the hardest thing in a tune to nail down, and you will be far better off getting the ones that your tuner is comfortable with.

 

Was your truck built before you bought it then put back to stock? i just watched some youtube videos of it doing donuts and making some dyno pulls?