An engine change will cost as research has to be done and possibly the excess space needs to be sorted. I dont know what the solution to that would be. Is it viable for one squadron as research can run up quite a bill. Secondly you will be set back 5-7 million per unit. " such aircrafts would mean you would be acquiring a third one for hte price difference. With the majority of our fleet needing changing should we go down that route? Lastly two different engines for one fighter bring with it a nightmare of depot maintenance, spare parts storage and repair schedules and different establishments for support. Therefore for one AF we will have two different engines to over haul. Also for the purposes of over hauling to setup facilities for a few squadrons would be another cost to be considered. All in all it is going to be a nightmare we are best off avoiding.
A