Listen up, don't do it!
As Cees mentioned there is the oil line. But when Dan says "Listen up, don't do it!" proceed at your peril. You might very well end up with an expensive, undrivable mess on your hands that will take a lot of money and effort to sort out. Here in the USA we call this "Mickey Mouse mechanics" and often curse the PO (previous owner) that corrupts the integrity of the car by trying this things. Yes, it may work. So will shoehorning a Chevrolet V8 engine under the hood.
Select a FI pump rebuilder;
be sure to send off your injectors for testing as well. Do it once, do it right. You will not be sorry you chose this path, but run every risk of cursing yourself if you start putting unsuitable pumps in place...
But hey, that's just my opinion...