How to approach predicted degree classifications on resume

Studying in the UK and applying to US banks. My UK university (which you can probably guess based off this grade description) uses a 20-point scale with the first two years being "sub-honors" and the last two years being "honors". Final degrees are classified in the typical UK system as First Honors, Upper Second Honors, etc. The grades awarded in the "sub-honors" years do not contribute to the final degree classification, with many students in their sub-honors years saying on their LinkedIn/resumes that they have a "predicted" First Class etc.

On the official Uni website, it states that the Uni does not offer a formal conversion into the American 4.0 grade system and that students need to use a credential evaluation service if they wish to get their degree equivalent in another country's grading scale. The university does offer "suggested GPA ranges" between the UK and US GPAs, however this itself is confusing as it states a 13.0 to 16.4, an Upper second honors, could be considered between 3.0 and 3.6, while a 16.0 to 17.4 could be considered between 3.7 and 3.9. This gets more confusing as there are two ranges for first honors that consist of different GPA ranges. There are other scales from study abroad programs that more accurately convert UK uni grades into US 4.0 GPA scale. Some students use this scale, but even though it's accurate, it is technically for study abroad programs.

My questions:

1. What should my resume look like to explain my converted grade scale? 

2. What is an First Honors / Upper second honors generally regarded as on a 4.0 scale?

3. If I am in my sub-honors years and yet to achieve a final degree classification, can I claim to be a predicted first honors student? What would classify a student as one?

Would appreciate any feedback from people who had similar situations, thank you.