Steering on sas blazer

[Stump Jumper]

Anyone have input on how to set up the steering on a sas blazer? Usi g spring over leaf springs and a jeep Dana 30 axle. Leaving original gear box.. I've heard to use an astro van pitman arm for the box. I just want to make sure it steers down the road ok.. Only running 33 in tires. Thank you