Hi Scomatic,
NA's MAP sensor & force induction's MAP sensor has difference operating range. NA's is from -ve pressure (vacuum) to 0 (atmospheric) while force induction's is from -ve pressure (vacuum) to +ve pressure (boost). It mean, both sensor cannot be interchangeble.
If the 2 MAP sensors has a close characteristic, we can use a customise device to shift its Voltage-Pressure slope of one to be identical with the other one. However this task is time consuming so it will be a lot cheaper if you can look for original sensors.