To be honest. The Class 60's still have a usable amount of life left in them which would be a much cheaper alternative to buying brand new locomotives outright, not to mention that the availability would be quicker hence that you already have the locomotive "shell" to work from rather than building a complete locomotive.
Tongue in cheek saying this but the Class 60's were ahead of their time when they were built anyway as the Mirrlees MB275 had emission standards to that of "Euro 1" specifications which didn't exist at the time these were built (I am open to correction on this matter)

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I think the logical method to work around the compatibility issues between the old and new technology may be to replace the computer with a brand new upgraded version which is more "future-proof" than the ones that were developed in 1987/1988 before the actual locomotives were built

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Hack, even these candidates could be built with adjustable wheel sets (I know the Talgo trains have them and Hitachi also make them as well), so if Iarnrod Eireann (Ireland) or RENFE (Spain) wanted them for freight/passenger use (latter subject to installing HEP equipment!). Those aforementioned wheelsets would allow those reconditioned 60's to work almost anywhere in Europe if not further afield. If broader ratio gearboxes are installed for faster top speed, they would be more appealing for passenger work (again if HEP and Push-Pull equipment is installed for this requirement).
Correct me if I am wrong, but I was under the impression that BR standardised on air con in their locomotives that were built post Class 56 which was from 1976? So I am assuming that there is no air-con inside the Class 60's then?

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GBRF might well take 10 of them but Network Rail might also want a couple for their engineering trains as well. Also the last remaining ones could be gobbled up by Freightliner for the heavy haul work. Especially with the disappointing outcome of what has become of one Class 70 going up in smoke and also one being dropped off the crane (though the latter is not GE or FL's fault).
As to comment further from the last post. Using the MTU power pack could be a viable option and successful choice if the HST's that have the V4000 unit in them (excluding the EMT ones that have VP185's) are anything to go by. I know the MTU units won't be everyones cup of tea because we (well most of us over 30) are grown up to the lovely sounds of the Mirrlees "chug" and that includes me

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But on the positive side, new equipment gives these locomotives a longer life in service even if the new power units sing differently to the older units. I can happily live with that

. Also the Class 60 design doesn't look much out of place when parked alongside a Class 67, Class 70 and most of the new modern passenger stock. To add to the record, the Class 60 is a way better looking locomotive than what a Class 70 ever will be. Even the Class 68 looks a bit like the offspring to a Rhino. But then that is just my personal preferences and opinion

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