Question: Rules - Vehicle Damage

[Dark-Young]

Hi. We are goint go try out Twilight 2000 2:nd Edition and i have a question!

If John fires his Carl Gustav at a Russian T-55 Tank! He hits the tank in the Turrent Front (TF 41).

The Carl Gustav have info (Round: HEAT, Damage: C4, B4 PEN 70C)
B4 is Radius and C4 is damage ?

According to the list its PEN - AV that is 29 (Side 212 in the rule book)

29 on the Vehicle Damage Resolution is 1 Major Damage result.

Then everysthing is ok, i get the damage tablets and so on.

But...
Do i use the C4 to somthing else or is it just damage on people outside the vehicle and is the PEN the "real" damage here

Thanks

Christoffer // SWEDEN