I picked up one of each of the Viet Cong types from the Irregular range. I currently am using the NVA with some repainting as part of my AK47 PPF army. The photos below show 2 bases (front and back), but there are actually 3 bases per pack.
The items below are the VC infantry advancing and firing, and VC cyclists with supplies.
I have the Peter Pig Men of Company B rules that I'd like to have a crack at. I know there are plenty of other options floating around - I'll welcome any recommendations!