Klimov Russian 423cm long 104cm in diameter 1055kg
EJ200 UK 398cm long 73.5cm in diameter 988kg
F404 US. 391cm long. 89cm in diameter 1035kg
f404 being the least powerful one they will all fly the Hurjet.
How much alteration the plane needs and how long time it will cost is another question. But it can be done.
Easiest one is EJ200. But since a good deal of parts come from Germany and they have a design input, it wouldn’t be very prudent to go with that engine unless the British side gives us Cast Iron guarantees. However, we can do a “T700TEI701D“ on this engine with the British, and produce a redesigned version under license from RR with most parts coming from UK and some being produced in house to start with. Then gradually increasing local input percentage.
Since the initial prototypes of Eurofighter first flew with a UK built Tornado engine, these engines can be considered too for the Hurjet prototypes.
Also the XG40 engine, from which EJ200 was derived, was designed and built by RR with 85% Uk government finance and the rest being met by RR. That should enable RR to be able to tweak EJ200 enough to make it “TJ200-TR201A”