Davies Craig. 80-120lpm pumps. Flow is king with w2a. I would be using the unit that is 25mm lines.

The last w2a I setup had 1" lines and a Davies Craig 120lpm pump running flat out all the time. Although the pump actually tested closer to 100lpm. This was run through a 1200hp w2a core.

You can afford to oversize things on our diesels due to always being on boost and I would going the biggest unit practical since you are using a supercharger.