Peter I'm sure you know what you are doing and have much more knowledge than me on the subject, I'm no expert, changed loads of engines in the past but never go to the degree of tuning that you do. However is there not the possibility that you will you not loose a lot in the move, ecu etc may reset? Then there is the problem with the ecu and the keys, just seems odd getting it perfect then so many things that can go off in the move that have to be done again.