I have 2" TC ez ride springs on my 77. ORD sells some ford shock hoops that will let you run longer shocks up front. I have 10" travel bilstein 5125's front and rear. They have a good ride on the road, though I haven't beat on it off road just yet.
http://offroaddesign.com/catalog/shocks.htm
Link for the shocks and the extended mounts. If you want to see step by step how I measured for them, look at my lift install thread in this section. If you have a 4 speed read the part about the clutch linkage! Hope this helps.