I just downloaded the new version of the port (completely deleting the previous version) and I downloaded silent threat reborn. Right out of the box, every one of the models was retail. Checking the mod.ini file, I found that for some reason they were not pointing to mediavps_3612 or fsport-mediavps (that was STR, the main fsport mod.ini didn't have any multimod section at all).
EDIT: Frak, now the FS1 only models are pure stock. Did I hack the mod.ini wrong?
EDIT2: I am such an idiot.
Yes, except that the first underscore should be a dash, e.g. fsport-mediavps.
For some reason on mine it was an underscore. That was the problem. She's purring with HTL goodness now.