hello
I do that too! I have 2 complete electronic set one for each plane (pump ECU......) and only moove the engine. It's perfect for me! but I'll buy a new turbine for the next plane because one turbine for 3 planes....
on the other hand if your turbine is sent for revision to the factory you can't fly whith any of your plane....
but it's less expensive with only one engine!(I still a student!!)