Nein, listen :
before you start modelling and spending many time in your project, gather some information how refractor handles vehicles and damage.
You have 2 different type of damagesources. Direct Hit Damage and Explosion damage.
To calculate explosion damage (splashdamage/Radialdamage) for vehicles, refractor engine use the default material of the vehicle and not front-,rear or sidearmor materials.
When calculating Direct Impact damage, Refractor use the Front-, side-, or rear armor material against the damaging material.
If your model has everywhere the same material, it wouldn't matter if your TOW missile hits front or rear or sidearmor. Always same damage.