Why so? There are a number of fighters that significantly out perform the Mosquito NF.30. The reason the B.Mk XVI is perked is due to the difficulty in intercepting it and, probably, the way in which it would be abused if free. The NF.30 isn't trying to avoid being intercepted, it is either escorting or intercepting depending on its mission profile and that isn't subject to the same concerns.
From what I gather the Mossy NF.30 would be 10-15 eny at most. With a top speed of 407mph (just going by what my books say for now) It simply will not out perform anything - its only best option is speed and 4 hispanos in the nose.
Facts are the P-38L tips 400 at 25+, so the NF.30 is no faster, with wep the 38L is faster by a small margin.
Acceleration wise would be interesting, 38L is 5 seconds faster getting to 300mph then Mossy 16, then again not sure on the NF.30.
Climb rate would be quite an improvement, from barely 2000 in the mossy to 2,850 fpm, however 38L still out climbs it.
Turn radius the Mossy wins, however in the vertical, the 38 will win every time, not sure exactly what NF.30 would have, didn't check the wing loading.
As for the guns - 4 hispanos is its biggest asset, as for weight the NF.30 tops out at 21,500 full fuel and guns.