The other Havana's I own are a 38L. This one is a 40R.
Monkey - the pit-to-pit chest measurement of this is 1" wider. I think for future Kent Wang items I will add a little to the chest. The good thing for SS is that the Napolis is already a little wider in the chest. The bad thing is that I like the Lazio, but wonder if by sizing up the jacket the pants will be too big in the waist. If they do separates it would solve that issue.
Ironballs - yes, that's the one.