Thanks for all of the replies. I myself do not have a mod project but I just thought it would be interesting to have an alternate model available.
There was something similar with the Deimos and Colossus, though I know not why they took all these turrets off.
The four (two on each side) multipart turrets on the deimos, and the numerous turrets on the Colossus.
I was unaware that the Colossus in game model differed that much from one the CB's and cutscenes. I know that it had some of its turrets disarmed in the weapon.tbl in its original format however.
In the case of the Deimos it is actually 6 turrets 3 on each side that are missing. Two on each side of the upper hull below Turret01 and Turret02 for four there and and 1 one each of the after hull's bulges below the Parana mounts which are Turrets 25 and 26.
CBs must have been made before the final turret layout was decided.
I don't know why it was changed though.
A version with old layout for mods would be an interesting idea.
That would be great if it is not any trouble. Otherwise point me in the direction for instructions on how to do in myself.