Most fail to realise -
Spit XVI - Add normal tips, replace 50cals with .303s, add retractible tailwheel and wing tanks - You have Mk VIII.
Most important bit, the motor is the same, albeit the XVI has a U.S. built Merlin 266, VIII is a U.K. built Merlin 66.
The '2' at the front de-notes a foreign/import built Merlin.
There should be (isn't) a difference of 1000ft between the full throttle height of the Merlin 266/66 so assuming the Merlin 266 was modelled using the Merlin 66 data.
So the XVI is actually an LF IXe.
If you check the performance between the XVI and the VIII there is very little to choose between them (apart from the XVI's roll, but an VIII with clipped wings would roll almost just as well).
As for perked?
Well the RAF planeset has managed to become the most perked of the major 3 planesets (prop driven), and manages it with the poorest LW presence of the major 3. -
LW - Spit 14, Tempest
MW - Typhoon, Spit VIII
EW - Spit 9 , Lancaster
Not bad, 50% of the RAF planeset between all 3 arenas, don't think any of the other major 2 players comes close.