Pulsation is not a consern..
We are currently building our own two stroke diesel engine for entering in the Shell Eco marathon. The sought pump is intended to pressurize the "secondary" fuel system(the circuit just behind the solenoid injector nozzle) and with a relieve valve controled "bypass"...
I am currently involved in a project at DTU (poly tech Uni, Denmark) where i am in dire need for a small(physically) all metal pump, delivering pressures up to 100 Bar with no particular requirements regarding flowrate (very small).
The pump MUST be relatively free of Rubber/plastic componets...