What rear suspension to put on - cutting off the 8 bag

The sway bars bolt right in. We always change the center wish bone bushings and the long bolts, because we only swap in the waffer bars(the used one comes with all the pieces). The waffer bar bushings have always been good. Truck Parts and Accessories – New, Used & Rebuilt | Vander Haag's
If you scroll through you can usually find ones off newer trucks. The ag200 has the same large airlines as the ag400. Once you replace the knuckles with the waffer bars the only difference between the 200 and 400 will be the shock mounts.

 

What is the difference between neway and primaax

 

The neway is heavier built or heavier weight I'm trying and starting to look into it neway or primaxx