there isn't an overprog module
you can just choose between AUTO double tap or classic ATGM
Edit: The ATGM are also strongly affected by APS (because tier 9, rip him) but deliver the deadly punch
NERA is actually very useful, this doesn't make you unkillable, but can give you advantages over clueless enemy, it work exactly like type 10 NERA so it's nice (except you have less armor, so it won't tank like Type 10)
It can actually turn faster than any other tank (if i'm right) by going forward, turning, and using the brake (space) while "standing still" (the super s p e e n)
Final best point the Hunter can Drift