Monthly Archives: March 2023
Holley EFI 558-503 GM TPI and Stealth Ram EFI Harness Kit
GM TPI and Holley Stealth Ram&trade:;Harness Kit Includes: Stealthram/TPI Main Harness, Main Power Harness, V-8 Injector Harness, HEI Ign Harness and Ignition Adapter & Tach Input; Simple Installation; Works with HP or Dominator ECU’s. Holley EFI 558-503 GM TPI and Stealth Ram EFI Harness Kit. GM TPI and Holley Stealth Ram&trade:; An EFI system depends heavily on being supplied a
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