March 2011 Fastrack

[lateapex911]

All the easily available data I see shows the 2.2 KX motor in the "early" cars at 110 hp and the 2.3 NG motor in the very last ones at 130 hp EXCEPT for the Wiki page where the "late" KXs made 120. If that's the case, with the update/backdate rule you'd get the 120 for all cars with the KX on that spec line.

If the cars are on the same line, you can use the later car's brakes on the earlier car.

Except if the difference in power is attributable to something that is part of IT Prep, like the ECU or exhaust system. See "Bettencourt Miata vs the Process", and the "Ops manual" as examples.