If you can tell us what turbos they are that would help out alot.
1. I am 100% turbo setup number 1 will not work with AC and that turbo looks like GT28RS or GT2871
2. I know turbo setp 2 is GTIR manifold and turbo
3. looks like Bluebird-Aveneir manifold with some unknown upgraded turbo.
That being said I would go with #2 GTIR setup