Overview Reviews Product Description 561-100 Holley EFI Spark Plug Wire Set Holley EFI LS wires are designed to work with Hooker shorty headers to prevent burns resulting in misfires. Product Videos Custom Field Product Reviews Write a Review Write a Review × 561-100 Holley EFI Spark Plug Wire Set Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *