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Holley EFI 558-480
Holley EFI Transmission Harness - T-56 Magnum; Terminator X Max ECUs on V3 Build 100 or later - Holley EFI V6 Build 300 or later
Holley EFI 558-481
Holley EFI Transmission Harness - T-56; Terminator X Max ECUs on V3 Build 100 or later - Holley EFI V6 Build 300 or later
Holley EFI 558-482
Holley EFI Transmission Harness - TKO; Terminator X Max ECUs on V3 Build 100 or later - Holley EFI V6 Build 300 or later; VSS Sensor Connector for GM Transmissions Only
Holley EFI 558-499
Holley EFI Terminator X Max Transmission Kit - GM 6L80/6L90; Requires Terminator X Max - Requires V3 Build 100 or later (Does not support 4WD)