Gonna put new springs on my truck as mine are flat and it actually leans to one side cause the other is worse so I need to know the best leaf springs to get I don't do any serious off-roading the most I hit is a few mud holes hunting I commute to college everyday so something that is gonna ride pretty decent and I pull small trailers so something with a little bit of weight capacity

 

And I have a 4 inch lift with blocks in the back

 

So I know you say blocks so this isn't for the 2nd Gen 4 runner in your avatar? Or did you convert to rear leas and ditch the coils?
Helps to say what year truck...

National Spring builds good stuff or Deaver

 

It's a 89 single cab pickup not a 4Runner