Anyone else using MegaSquirt on a LA motor?

Because I did quite some preliminary benchtesting with my lathe, trigger wheels, distributor and HEI-modules, when time came to install everything, I had a few options on how to get the rpm-trigger from the engine.
I could either hook up the MS3 directly to the distributor, a crank trigger or my preferred way, using the bypass function of the HEI 7 or 8-pin modules.

Everyday I've been driving in the last 10 days, I carried my tuning-laptop with me in the car. A number of times I stopped halfway, did a few mods to the timing table and went off again and feel the difference.
I think I've come quite a bit with improving the spark advance map since 2 weeks ago. There's no comparison to the 'stone-age' ignition and vacuum curve in the old mechanical distributor setup.