What the hell here goes...
A 99-00 Lightning has 80 MM Mass Air unit.
A 01-04 Lightning has 90 MM Mass Air unit.
Both programmed for 42 # Injectors.
Both Lightning units tend to peg at around 450-500 RWHP/550-600 CHP.
And I agree and disagree with the Hp factor. I agree with
the fact that is not number specific, however around a certain hp range, certain MAF's do peg out. But the increased hp numbers are usually credited to increased boost levels, which increase the amount of CFM coming in. And more boost usually means more heat. The quality of your air has a large factor in the voltage IMO. Which greatly affects the maf and it's voltage.
You can tune around hitting 5 V but with what is available out there you really don't have to anymore (on other SVT products).
They make MAFextender's. So if for some reason you are seeing 5 volts you can add this without having to spend big $$$ on a MAF that does not see 5 Volts at a certain HP. Mafextenders are a great compromise, however I can not vouch if they will work on a 'Tour. But would imagine so.
There is also a few company's that offer aftermarket MAF's. Once again, I do not know if they will work on a 'Tour but I know they have them for several ford products, so I do not foresee that it wouldn't work, but who knows. Needless to say, I can not imagine that you should have to worry to much about pegging a Lightning Maf, but kudos to ya if you do in a 'Tour!
But as usual, probably none of what I said matters, because this is a contour and nothing seems to work on these cars without a lot of custom work.
