Nashwan I saw a text which gave Mosquito FB Mk VI three different speeds (0 ft ms gear, rest fs gear):
With load, only with rails under wings and clean.
0ft 13900 20700
Max Speed (loaded) 278 327 329
Max Speed ( only rails) 286 336 337
Max Speed (clean) 296 351 358
And Tu-2S @ sealevel 482/509kmh = 299/316mph and in 5400km alt 547kmh=347mph
Of course these might not be correct numbers but anyway it is fast, have defensive armament and good load :)