rear suspension question?
 

hey guys i drive a 01 blazer lt 4x4 and im gonna be doing a system build and after said and done everything will weigh in at roughly just under 1000lbs what can i use to help keep the rear end from sagging and that can be somewhat adjustable?

adjustable coil overs,leaf helpers. thats about it. Also a good tune up and trans cooler as your gonna notice a lose of power and gas since you will be pulling around a grand all the time.