AP - to answer the engine questions:
1. All CX and KA A330's are Trent 700 powered (772 on lightweight gear a/c and 772B on heavyweight gear a/c)
2. 747-467/444 Are all powered by RB211-524HT engines (Trent Core 24 FSN's, but using the G thrust rating of I think 57,000lbs)
3. EX SQ a/c 747-412 are all PW4056 powered. Only the new 747-400 ERF's are powered by the PW4062 engines (altought they are interchangeable)
As for the A340x question, over to the people at the pointy end.
Brgd's
N1 Vibes