We did it back in high school with a 360. We built a shop race car (valliant then a dart) that we reversed the stock pistons, paw 260 cam, stock cast single plane intake, holley 750 dp 2" spacer, cheap headers and 727 with paw stall and 3.91s out back. Ran 13.0s laving the shifter in drive but ran 12s when manually shifting. No before or after but what did we have to lose?.
At the same time in this day and age if someone makes a claim that something somewhat controversial makes more power they should be prepared to have some evidence, especially in the world of social media.
