Supporting fixture

I am in need of conceptual design for a fixture. We are trying to find a concept of fixture were it has to take a load of 8 ton. With this fixture we will be lifting the load (dead mass)which is on the top flange.

The component is as follows. There are two flanges for the main comp1 (top & bottom). Top flange is proturuded outward than the bottom. Main comp1 rests on bottom flange. On main comp1 there is comp2 which can silde vertically. A fixture to be used to support the hyd unit so to lift the comp2 vertically. Fixture position should be away from both the flanges.

Constrain or difficulty is, it has to be mounted between two flanges (top & bottom) & able to sustain the load of 8 ton. Bolting mechanism can be done but again the bolt size are specified as M20 10.9 grade which does not support the weight. More advantage would be to design a fixture without the use the hardwares i.e. hook type mechanism if possible.

Can any one guide, suggest or share the ideas or thought so how to build the same? For any more details please feel free to discuss.