Merge Models for Full Body Model

[jannik johann]

Hey there,
I need to analyse a few complex acrobatic movements.
Therefore I need a full body model. So far I couldn't find anything like that, if someone has already built that, I would really appreciate a link to that.

Otherwise I would probably try to merge this model of a 18-years old person
https://simtk.org/projects/spine-children
with 2 other models one for the arms+hands, maybe this wrist model
https://simtk.org/projects/wrist-model
and one for more detailed legs, maybe
https://simtk.org/projects/hip_muscles (LaiArnold2017_hiptorso)
or the RajagopalLaiUhlrich2023.
Do you have any recommendation for a specific model combination.

Now my actual question is, how can I best merge these models, do you know common pitfalls that happen here and how do I calculate the new correct muscle parameters like max_isometric_force, optimal_fiber_length, etc. to match the new model.

Thank you for any help!