I have a 1992 lux like trains, and im running ARB Dakar HD springs up the front and MD dakars up the rear, with OME shocks and Bushes, In rockcrawler shackles.
i fitted them myself, never got told about the fitting kit (wasnt aware they existed until trains asked me about them a few months back)
The front springs have a definate W shape to them, but they are still holding the truck at least 50mm higher than the old toyo ones were, and are within 10mm of each other side to side, but the rears arent in the same boat.
In hindsight, i should have gone HD front and rear, but i didnt have the LR tank or cargo drawers at the point when i bought the springs, so i was after a better ride. I'll be fitting HD springs as part of my engine conversion project.
I think it depends on the day you get the stuff- i havent had a problem with the OME gear on MY personal truck- and i will be getting ARB shackles and pins to match (unless i go for some extended ones).
But i cant really say the same for the OME stuff fitted to my work truck. Its a HZJ79 series cruiser, with a drilling rig on the back of it for soil sampling. Its been fitted with the OME 3700kg GVM upgrade, and the rear springs have NOT coped with the weight. It is about 50kg overweight, but if i hook a tandem trailer with 2 tonnes in it (Still well below the GCM of the truck) it would be more tha 50kg overweight due to the towbar downweight.
my rear wheels are cutting themselves on the wheel arches because they touch- So now it looks like we're either going to ditch the $400 leaf packs and get some custom, 800kg constant load packs fitted, or end up fitting air bags to assist the springs.
Bit hit and miss on their stuff at times....
Oh- But when my OME shocks fail, Im not fitting them again, Im going to line up a set of Bilstiens for the old girl
2005 HDJ100 Manual, ARB bar, XD9000 winch, ARB rooftop tent + awning, Drawers, Engel, 2" OME lift, 285/75R16 KM2's, iCom, HID XGT's.