Danny,
Top secret...

Simon,
If you don't want one highly polished, you can always paint it as per the one I have at present.

Yes it it is a direct replacemet for a an standard Cosworth manifold.

Yodi,
You may get a small amount of response reduction on a small turbo (similar to when you fit a big intercooler), due to the increased volume.

Yes, you should receive before 12 today.