Yep Angus, you be right, i did overview the kW, thought its HP!
But anyway, i doubt they had such a engine, if yes, the germans whould have been happy to copy it. 1726HP in 8000m would have been the solution of all the problems in 1943/44.
Straffo, wh y do i compare apples and oranges?
We have the BoB Hurri, Spit, 109E4 and 110C4 and you wanna have the D.520, not the 530, right?
We would need the pre BoB Hurri and Spit(no constant speed prop) and the 109E1 + early E3(lower rated alt etc) to have the fitting oponents and wingi planes.
There is a not to smal step between BoF and BoB.
Greetings,
Knegel