I would think a urethane bushing with a bolt going sideways through it (perpendicular to the load) would be best. I am not sure if Afco makes them this way, but I know Strange does. I would expect the bearing (Heim) style ends to pound out over time considering the weight, but it would depend on driving conditions and miles vs. time. This is what I have done with a couple of lifted full size trucks, but with softer, rockcrawler style springs, so tough to compare. Changing the bearings in the ends of the shock every year or two wouldn't offend me, not sure how you would feel about that. I wouldn't want the factory style stud top shock, and I know you can buy the towers setup for coilovers with the sideways style mounting bolt, also. I would also consider speaking with King, I am a dealer and know they are very cooperative with custom stuff, valving, lengths, etc. They know what these trucks weigh, and how to keep them together while being jumped in the desert, might be worth a call to discuss what you intend to do. Also a very nice product. I can't remember if they have double adjustable available externally, but I know they can do single clickers on the reservoir...
I have a guy wanting to lower his 10 ford, but being in upstate New York, he would get laughed out of town, too many rednecks up here.....:Cheer:
