I have reached another cross roads.
I have 2 distributors on my table and I need to choose one to finish the engine assembly and start it next weekend.
The original one is the vacuum retard type, the spare one is the vacuum advance type.
What is a man to do??
The car is a 1975 XJ6C, new everything inside, now non-original, double HIF7 carbs, smog-test exempt, all smog equipment removed.
Interesting article: http://www.georgiajag.com/Documents/Vacuum%20Advance%20versus%20Vacuum%20Retard.htm