I have a 1966 M151A1 that I have put many miles on over 20+ years. I like your comparison with driving a 3 wheeler. I’ve never even come to a rollover but I respect the vehicle and it’s drivability. I think some of their rollover reputation came from young soldiers in Vietnam who were used to their Mustangs and Camaros at home. Excellent M151! I wish mine was as nice.