if i was you.... id do nothing to it, besides maintenance. If the truck is a "rusty roller" you will never get your money back out of it if that you will need to put into it. just make it reliable, and work/school, and one day get a newer car and go from there. i know its probly hard for you to think like that since your probly 16ish and its your first car so you wanna do all this work, but in the long run, save your money.