I just reread what I posted last night, and realized that it may not have sounded quite right. It's fine to discuss your question here, I didn't mean at all that it wasn't. I just think that the gmecm list will be a more knowledgeable pool of people for this particular question. I'm not very familiar with the 165 but it normally doesn't use a maf, only map, right? So far as I know the GM map sensors output a voltage which varies from 0-5 V over their pressure range. The GM maf sensors output a triangle wave (well, pretty much) whose frequncy is proportional to airflow. The ecm has to do a frequency measurement, not just a simple voltage measurement, which means a different input channel (digital instead of analog) and much different code to handle it. I think the Ford maf sensors are voltage output so it may actually be easier to use one of them, but that's the extent of my knowledge so I can't point you to any particular part number. You will still have to convert the 165 code from speed-density to maf, of course.
Oh, as a practical matter, the GN mafs have been discontinued for a few years now from GM and only remans are readily available, which have a spotty record of poor airflow housings and incorrect calibrations. More and more TR owners are converting to the LT1 or LS1 maf which is cheaper and widely available, along with the Translator from Ramchargers to handle the electronic conversion. If you stay with a GM maf, one of those would be a much better (IMHO) choice than a GN maf. Anyway, good luck.