[blykins]

You want a quick curve in a Cobra. I normally set my Cobra engines up to be all in by around 2600-2700.

It's easy to do with an MSD, so I'd go ahead and change it.

For initial, I'd start around 16-18° and use about 20° mechanical advance.

You can play with the amount of total timing later once you get acquainted with everything, and depending on the engine specs, it may like a bit less than that.