[Spits] Spitfire Pertronix

[dmitchel at sbcglobal.net (Doug Mitchell)]

Spitted ones,

After chasing an intermittent miss, I am considering buying a Pertronix. 
Before I buy one, I have some questions.

1. Anyone used one on their Spit? My experience with one on the Stag wasn't 
good.

2. I have an early MK IV 1300 engine, with no advance/retard, anyone know which
is the correct unit for this engine? Not sure which distributor I have.

Thanks,

Doug