lord have mercy,you're running this rocket ship on a single circuit master cylinder.unless this is an old photo,it's simple to change to a split system from a 1200 coupe or sedan.you don't need a vaccum booster,but you can do what i did on my 1000 racer & get a brand new master cylinder from a sunny (13/16's) & change the rod over on the back to bolt it straight in.you just take the triangular shaped circlip out,& the rod can be removed. use the hard lines & splitter block from the 1200,especially the line to the rear brakes.

i think its all standard datsun stuff exept for the cam and valve springs, out side the motor it has a nissan/garret tarbin, 1.75 cd stromberg carb, water meth.,modified three row radiator, lightend flywheel, custom twin diaphram pressure plate, solid clutch plate, ford 4-speed, and a holley blue fuel pump that comes on at about 5 psi.

What internals are u using?? Have you dynoed it??

That is so good.
Such a neat set up too...