I've measured the leads:
55cm long
90 degree plug at the coil pack end. The internal connector has an inside diameter of 4mm and outside dia of 5mm. The rubber boot ID is 13mm
I couldn't see a manufacturer's name on the coil pack but it had #0313# printed on it.
The Spark plug end has an elbow cap for a 12mm spark plug,
I have a rough drawing but at the moment can't seem to upload it to TM so will add this later.
I would be interested in a set of
Magnecor (red) leads if you still plan to have a set made for yours, given above info. I notice they don't have them listed for M3W just yet but maybe you could ask if they could add to their catalogue.
