Well, I went ahead and bought a new 'wheeler. Got a cherry '84 K30. Yep, I am as one ton as it gets now! It has a 4' lift, 35 inch BFG's, 4.10's, a detroit out back, a 454 and TH400 with 30K on them. He used it only to tow a car trailer (not much of a wheeler), and his sons convinced him to put the detroit in the back a few months ago. The front was lifted with soft springs which began to sag under the big block, so the previous owner installed TWO add a leafs in each spring pack, and a half inch block /forums/images/icons/shocked.gif. Well, it rides terribly, even with new skyjacker shocks. Luckily, the suspension doesn't move or the brake lines would have been maxed out I think. So I called up ORD this morning and ordered some Tuff Country 4 inch HD springs, stainless brakelines, and swaybar bushings. Shackle flip is in the future for the rear, but the cash flow is a little low right now /forums/images/icons/frown.gif. I'm working on getting some pics taken. Anyway, so I'm not off topic /forums/images/icons/smile.gif, would I really benefit from the heavy duty shackles with only 4 inch springs? It doesn't seem that the 4 inch springs are arched enough to come in contact with the frame.