Aircooled VW South Africa

Hey guys, I have a 1.6 carb caddy. I've just redone the complete motor and goes ok but seems to be breaking down on spark. I've changed the coil pack, plugs and leads. I want to change the dizzy cap and rotor but cannot seem to find a new original Bosch. Anybody got a new 1 laying around they're wanting to sell? And secondly what else could cause an electrical breakdown?

You might do better to ask your question on a watercooled forum. Although I am sure there are people here who could help you.