Out of the box, the Academy Pavehawk is from the early '90s. A current-ish MH/HH-60G is quite a bit different with lots of bits and bobs added.
Here is the latest as of about 2005. It hasn't changed that much externally since then. Many are still in the older configs too, like mine below, since they are upgraded as they go in for depot level rebuilds.

You can add most of the upgrades from the
Cobra Company MH/HH-60G Upgrade set. The external gun mounts are not yet available, but are being developed by an AM company.
You can see
my HH-60G build here for some pointers. It represents a bird from '03-'04 in Iraq.
Let me know if yo decide to build it and need any help. Also check out the Rotary Wing Forum at Aeroscale.