it's not who's F/I that matters, it's which tuner tunes the speed density tables even though these are MAF based cars. The answer is Roush and Whipple canned tuned, and thus, anyone who builds on top of those files how ever it's still inferred.
Seems like I heard somewhere that Whipple and roush develop off of a ford racing FI calibration, so it could actually just be in there from the source.