I need to know the year of this turbo motor. It is a f54 block w/p90 head. I am try to see which ecu and harness will work with it but I need to know the year of the block. Yes I have heard that only a turbo ecu and harness works on them but I know a couple of people who have 81 f54 turbo's running on 75' ecu and harness.# L28-752474