Help!!!

[kami]

I have bought Hartge exhaust manifold (for m30) and I want to do rest of exhaust sistem like on 323i (on my 315 with m30 engine) and I hope that someone can give me advice how to do it.
Also I have Tahoe Speedometer from 323i and I want to know is the rev/RPM counter going to work normally when it gets connected to the engine?
And what master cylinder is needed? I am asking because original brake calipers (front&rear) are replaced with: BMW E24 M635csi front brake calipers and Opel Omega B rear brake calipers.