Paricutin (nice name by the way and I did not know anything about ammunition ships until you posted and I looked it up).
Ammunition ships seem to be named for volcanoes....ironic?
She was a Mount Hood ship, class C2-S-AJ1. There are no plastic C2 ships. Certainly some in 1/700 resin, I would think.
www.battlefleetmodels.co
Looks like a chore, but worth it
There's a Revell model called the Hawaiian Pilot, which is a C3 ship. But it's not the same at all.
The Revell Montrose is a class VC2-S-AP5 based on a Victory Ship hull.
There were a couple of Renwal APA/ AKA kits, Sarasota was a VC and full hull, but not what you want. Seminole is a AKA class C2-S-AJ3 which is closer. Both of these are good models, but expensive and hard to find.