~~~Premise of this post~~~
First, please take a look at the Z'Gok (SEED)/Infinite Justice Type-2, created based on the image from the theatrical version of Gundam SEED FREEDOM.
https://www.gn-app.com/posts/a9084ed2-5d0b-4f92-9ebd-5f8e7695a8a6
This post introduces how to change from the Z'Gok form to the Infinite Justice Type-2 form, as shown in the post above.
You should be able to see how the parts are connected!

[Transformation] Z'Gok → Infinite Justice Type-2 [SEED FREEDOM] | オリベー(・×・)'s Gunpla works