Raw - that's awesome research! Please post your results when you get them. 125 for the set of two? Good price. I'm not really interested in any lift, just stiffer, although if it's like 1" of lift I can crank up the front end.
SilverGhost - I had weak AC and read/heard about the weak cooling of the early D's without the elec fans, so I bought a BeCool, elec fan inbetween Rad & condenser, controller, 180 thermo, new water pump.
Then I put in a tranny temp sensor, GS remote tranny cooler, and all syn fluids everywhere except tranny. Then rancho 9000's. Fastman TB. Rear helper springs. $140 towing mirrors.
Brake controller, anti sway, and weight distribution I got when I got my trailer. 4K empty, 5K loaded.
Actually it's about $2500 probably at this point. I ordered 3.92's also, have yet to put them on. And I need to get with Scott again to get my dual fan pack and take off the factory fan totally. I'm taking out my driver's seat and adding an lumbar support to it, also. I think that'll be it.
My tow is from FL to CO in 100 degree heat, all the way up to 9500'. I was very impressed with the cooling system, but noticed that whenever I was hill climbing, the fan clutch would engage and take away like 25 HP and definitely the 3.92's would be an improvement.
Looking forward to some more spring Mods and another summer tow. Yeah the wheelbase I can see is definitely a factor, both in bounce and in sway - I can see why you long haul with the Pickup. If I had a 5.9 and intake/headers, that would probably be better but I have to stop throwing money at this truck! An Excursion-type vehicle would probably be better for towing, but hey, I love my D and this forum?
Smash