Ever come across 123ignition.net ? They have some very interesting units. The latest is a "solid state" dizzy, with a USB socket, so you can change the advance curve (don’t think they make one for the golf, yet). But if you read the comments on the forum, they are very positive. My brother in law bought one for his DS 6 years ago, and it’s been spot on since (he had loads of issues with the original)