OO i wasn't to sure, I thourgh it was just abit high.....Cheeers

thats not the clutch cylinder up top, its a remote resevoir to clear the manifold.

Yes now i can see the differient in sizes,

looking at your pic's there i see the clutch cylinder is up top,
is it able to be attached to original pedal where the cable came out of?

from the looks of this the PBR master cylinder would probably hit the inlet manifold. If its the master cylinder I'm thinking of it has another cylinder on the engine side of the normal one with the brake line coming out at right angles towards the plenum.
I had to remove mine to fit a 4age manifold, the normal 120y booster/datsun mc gives you a lot more room.

o ok thanks for the tip

it's normally the clutch master cylinder that hits on the back of the plenum.

Hey Fellas..... I have a 200B booster with the square plastic tank on top,

Is that to big when fitting CA18DET into the bay of my 1200,