Msd 7al-2
MSD stuff is good if it doesn't have to try and light the world thru a drinking straw. A friend constantly had issues with his MSD ignitions and gave up, for another brand, with great luck. I personally wouldn't have anything, but MSD, altho I've not purchase a Digital setup, yet.
I'd bet a 7AL2 would survive on the street with a lower power coil, but no doubt the charging system better be up to speed or it'll use up a battery quickly.