I have a 78 that the po had set up the suspension on (flat worn springs and fabricated shackles Fronts 4" pin to pin, rear driver 6" and rear passanger 8". Rocker step height is just under 24". I run 33X12.5X15s with minimal rubbing. I want to replace the worn springs/shackles to fit 33s or 35s and am looking for suggestions. My choices so far are 2 1/2" OME with extended length shackles or a Safari 2 1/2 or 4" lift. I know "Hell Creek" springs are mentioned as well as the "Rough Country" setups. Suggestions?