No Not me mate, far to tricky for me - no engineering skills at all. However I did know what I wanted. Tipper unit electric/hydraulic a off the shelf item here in NZ. Deck made by engineering firm in Christchurch, there are a lot of cab / chassis Utes here so professionally built items are common. This is their standard deck for a Landcruiser with some modifications for the tipper unit, and I doubled the height of the sides, for a greater carrying capacity.
Engine is the 1VD-FTV ( Turbo Inter-cooled Diesel V8)
Truck is factory standard with the high county pack option here in NZ = front / rear electric lockers.
This is the LX model so is bit more refined than the "workmate" - certainly drives better with the wider wheels.
Bars are all Toyota factory accessories - designed to take the 4500kg super winch. The only thing I have changed are the standard tires to 285/75 / 16s
And I just love driving it. Its not used during the week as I have a work vehicle, but come the weekend I just have to find an excuse to use it.
Thanks for the post