Is there any merit in re-engining the A340-200/300 (a DC8-70 series for the 21st century!
First thing that comes to mind id the life expectancy of a DC-8 to any Airbus. I am sure that would be taken into effect, lots of politics as manufacturers today want aircraft to have a shorter lifespan. I am sure there are many older A-340's out there that operators may benifit from a re-engine, it all depends on their fleet and business to determine if the upfront cost of the new engine will be offset by the economics in reasonable amount of time. Manufacturers have been known to purchase older aircraft in trade for new ones just to scrap them.
If I was John Travolta I would be looking for the deal you speak of.. His fuel bill on that old 707 has to be rediculous.