Needs to be in the Stang.The 1st gen 3.5EB in the F-150 is rated at 365/420 on 87 octane fuel. The Lincoln Navigator with the same engine is rated at 380/460 on 93 octane fuel.
If this is still the case, as we haven seen what fuel achieves the 375/470, we could be looking at a 390/515 engine on 93. . . if indeed 87 yields the new output, though I don't see them changing the game plan.