But to truly get the springs you want try Alcan or National spring that way they are made for your truck not "everyones" truck.
Let's not forget to give props to the guy whose site this is... marlin springs are an excellent product and should be at the top of your list if you have a straight axle. If you're looking for a quality product with good offroadability and you have IFS then plan on spending quite a bit of dough. Like everyone's said, we need more info to be helpful.