here is my work in progress:
My old version:

1º removing of the mold in tools:



After that, i removed everythings on the inside, the battery compartment, the tubes for the figs and the turret. I ve cut everything to detail the transport area and the turret area:

As I am cutting many things i keep cutting and removing a part of the rear to place the rear hatch:

Some painting to have an idea of the shadows befor to start the suspension work:

Now the suspension:
Putting some suspension on the model that's not made for is not really easy and need it to work propelly like the original model still harder. So after some brain storm i've come to the conclusion that it's impossible to fit the same suspension type as the orginal model due to the lower hull of this toy witch is really different. Here is my ssolution: I am making bigger holes where you have the train axels to help the axels to move and down.
The originals holes:

And the new ones:

If i let it like that the vehicle just gone be lower but what i want is to have the wheels that follow the ground like on the plan here down:

I have cut some parts from plastic card, like that it can push on the axel, on each extremity a small spring and on the middle a big one.



Now some more plastic card and cyano glue and my suspension system is done !