| Holley EFI CAN Connector Pigtail (#SMI-CANPT) | speedmaxinnovation.com | 21.99 USD | 28.6 USD | −23.1% |
| (SMI-ALT44C) 2 Pin GM Alternator Control Module | speedmaxinnovation.com | 139.99 USD | 180 USD | −22.2% |
| Holley EFI CAN Connector and Terminals | speedmaxinnovation.com | 7.99 USD | 9.99 USD | −20% |
| Potted 3 Bar MAP Sensor GEN 3 CAR STYLE - LS1 LS2 LS6 LS7 | speedmaxinnovation.com | 49.99 USD | 59.99 USD | −16.7% |
| (SMI-03-FP) Hot-Wire Fuel Pump Harness for GM Truck/SUV 2003 | speedmaxinnovation.com | 139.99 USD | 159.99 USD | −12.5% |
| (SMI-9802-FP) Hot-Wire Fuel Pump Harness for GM Truck/SUV 1998-2002 | speedmaxinnovation.com | 139.99 USD | 159.99 USD | −12.5% |
| (SMI-1104-FP) Hot-Wire Fuel Pump Harness for GM Truck/SUV 2004-2011 | speedmaxinnovation.com | 139.99 USD | 159.99 USD | −12.5% |
| (#SMI-DDPM-S) Digital Dash Power Module - For 3.5" and 7" Holley Dashes | speedmaxinnovation.com | 69.99 USD | 79.99 USD | −12.5% |
| (SMI-PRO-DF) Digital Dash Fuel Level Harness - 6.86" and 12.3" Holley PRO Dash | speedmaxinnovation.com | 35.99 USD | 40.99 USD | −12.2% |
| (SMI-IH2-GMT800) Fully Integrated Holley EFI Harness for 03-07 GMT800 Trucks and SUV's | speedmaxinnovation.com | 1750 USD | — | — |
| (SMI-IH2-GMT800) PRE-ORDER ONLY! Holley Integration Harness for 03-07 Classic GMT800 Trucks and SUV's | speedmaxinnovation.com | 500 USD | — | — |
| HOLLEY EFI
3.5" LCD TOUCH SCREEN 553-108 | speedmaxinnovation.com | 314.96 USD | — | — |
| Holley EFI LS Injector Harness - EV6 558-201 | speedmaxinnovation.com | 158.95 USD | — | — |
| Holley 4.9lsu Bosch Wideband Sensor 554-155 for Terminator X | speedmaxinnovation.com | 147.95 USD | — | — |
| Holley EFI CAN Splitter 3 Way | speedmaxinnovation.com | 67.99 USD | — | — |
| 99-02 GMT800 All-On Headlight Command Board (#SMI-AOLM1) | speedmaxinnovation.com | 59.99 USD | — | — |
| (SMI-IH-GMT800-TB) Throttle Body sub-harness for GMT800 Integrated Harnesses | speedmaxinnovation.com | 59.99 USD | — | — |
| HOLLEY EFI TERMINATOR X WIDEBAND ADAPTER HARNESS 558-463 | speedmaxinnovation.com | 57.35 USD | — | — |
| LSx to 8.1L/8.8L Conversion Harness - CAM SENSOR (#SMI-CAM-81) | speedmaxinnovation.com | 49.99 USD | — | — |
| (SMI-CCA1) Cam Sensor Adapter 24x/1x to 58x/4X/LS2/1X/LS3/8.1L | speedmaxinnovation.com | 49.99 USD | — | — |
| LSx to 8.1L/8.8L Conversion Harness - CRANK SENSOR (#SMI-CRANK-81) | speedmaxinnovation.com | 49.99 USD | — | — |
| Digital Dash Fuel Level Harness - 7" Holley Dash | speedmaxinnovation.com | 44.99 USD | 0 USD | — |
| (SMI-IH2-GMT800-YMK) Year Model Key YMK for SMI-IH2-GMT800 Integrated Harness | speedmaxinnovation.com | 15 USD | — | — |