After testing file parsing through regex expressions and finding it to be impractical, I've returned to my earlier approach and completed a finalized converter for Front Mission 4.   
The models are available here for those interested. FMO is next and will take far less time.   

FM4 Final Mass Converter.7z

Edited February 2, 20242 yr by Greg
Spelling.

It's been a while. I did get through FMO and found the PS2 version is missing some models and plan to take a look at the PC version. I also tried to work on the maps of FM4/FMO since people asked for them and had some success but, much like the wanzers, the maps are subdivided into chunks that are dumped at the origin, making them impossible to work with. Right now, I'm working on identifying what I've dumped and converted from FM5 with the help of this script.  

Script and Test Files.7z