I updated the optional NUTS-HHNF vehicle add on rules with: 1. Vehicle crew attributes
2. Penetration by Range and Target Aspect
3. Non-penetrating damage
4. Battlefield repairs
5. Shell types
6. Ammo record
7. Tank control sheet
E.g. - a non-penetrating hit can still cause some damage, including "Surface Damage" like setting stowage on fire (-1REP on your In Sight tests), track damage and so on.