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Discussion Starter · #1 ·
Recently purchased an 87 Lx 4cyl that was swapped to a 5.0 running a FAST EZ-EFI system. The factory harness and EEC-IV are still in the car. Trying to determine if the EEC is the original 4cyl automatic one or if was swapped to a 5.0 before the ez-efi was installed. below are the number/letters and a picture as well.

86M20
EEC-IV FC
EFI-SD8 E7TF-12A650-C1A
 

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