I got the southbend dual friction, it's good and bad. not going to replace it until it's worn out, but not sure I'd get another either. good- no slip, rated at (I think) 600HP, 1000 lbs torque at the flywheel. I'll never have near that. definitely no slipping. It's got poly "bumpers" (for lack of a better word) and only 2 springs, supposed to cure the Ford problems with the springs breaking due to vibration.
bad- it's a rattly sucker, until you're over 1100 rpm or so, I knew about that before I ordered it, it can be annoying when driving slow. It is a bit harsh to take off, loaded or uphill, because it doesn't slip much. I have 22.5's now, I have to use the granny low unless I'm facing down hill. I pull a trailer once in a while, I have alot of faith in the clutch lasting.
my recommendation would depend on what you do with your truck. working it, pulling a trailer, it's great. for around town, empty/light daily driving, I would think about either a different southbend, or a different brand altogether, especially if your wife drives it. it does have a nice, light pedal, so easy on the legs to drive it.
I drive a KW heavy wrecker for work, and my wife seldom drives my truck, so the heavier duty one I got works for me.
99 F350 CC DRW 4x4 PSD 6 spd 4:10 Programmed, 4"exh, 8" lift Kelderman 4 link air ride rear, southbend clutch (and arm!) 295/85R22.5's, AFE stgII gauges, push bar, 07 lights, recon smoked fender and rears, ARE shell, DynaTrak combo front,
, Short throw Shifter, Airdog, Regulated Return fuel, Coolant filter, Bypass Oil Filter. Next:BB Turbo, CAC, Injectors, HPOP, Head studs, and anything else I can afford