I really don't think the current oil pump in the M96/97 is up to this task. All pumps are "head limited", meaning that they can only pump a given fluid so high or so far, which is why you cannot put an air to oil cooler in the front of the car, it is simply too far for the oil pump.
True dry sumps use "stacked" pump sections divided into suction and delivery, and there needs to be a proper holding tank with a deaerating section ahead of where the bulk volume of the oil is stored. This is one for a 928 set up for racing:
And here is a simple one for use on LS engines:
The belt driven pumps come in all sizes:
So even if you are not cash constrained, you are space constrained, and it is going to be difficult to find usable places to locate all this expensive hardware. This is a triple pickup system (AN-16 lines) on the bottom of a 944 turbo; you can just imagine what one is going to look like under an M96: