What is the best brand of drop shackles to buy, and how hard are they to install. I need something that will drop the rear 2-3 inches. My understanding you just need something to hold up the rear of the truck and then something else to support the rear axle and then unbolt the things and replace with the new ones????? Is that about right???

 

These are the ones I have on mine. I got 2" with the overload removed.