I've been holding out on this for a while, but figured it's time to just let it out there. I've only mapped a few sets already, but left the green fields editable so that anybody can take any set of Ford data and enter it in to convert it to GM format. I actually had to delete a few sheets of pre-mapped injectors due to file size limits on the forum.
The methodology is fairly simple behind all of it. Beyond knowing how the two formats relate (and the algebra behind the conversion from Ford to GM format), I used linear regression to map the relationship according to the various GM table break points. For flow rate, I actually use power regression because it generates a much better fitting curve (I also generate coefficients for the relationship because Bernoulli's simplified square root formula just doesn't line up right).
I think I hit all the major table formats. If the one you need isn't listed, pound sand, because I'm not editing it. Lol.
Note: You will notice that data above and below certain voltages in the offset table may look goofy. When looking at the visual representation of the offset table, the data will actually curl up in the higher voltages. This is because the generated data is not extrapolated according to a typical trend, but rather follows the coefficients generated for the voltages from 6v to 15v.