You wil need to call your broker to get the complete terms as these options are non standard. That means they are not for 100 uints/shares. All of these options relate to SUN options that were sold prior to ETP buying SUN in September.
Oh yes, SUN options would be adjusted. Should not be necessary to call anyone - he should be able to see the adjusted deliverable on his broker's website. On Etrade I can drill down on adjusted options to see the adjusted deliverable (number of shares as well as effective price at which they will be in the money or out of the money).
To the original poster who said "These calls seem to be at a good premium.": there is unlikely to be any mispricing out there - more likely you are misunderstanding the deliverable for the adjusted options, in which case the safest course is to avoid them.
Not sure that any ETP options have adjustments, however when there are adjustments you will be able to see them by looking at the deliverables in the options quote on your brokerage.
What adjustment factor are you referring to?