Holley 554-157 HP, Terminator X, X-Max ECU Bracket, 79-04 Mustang
Introducing Holley EFI ECU mounting brackets, allowing you to safely mount your HP, Terminator X, or Terminator X-Max ECU under the seat of a Foxbody Mustang.
- This item ships directly from the manufacturer. It may take an additional 25 business days for Holley to ship this item.
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Q & A
Speedway Motors and Classic Trucks called on Painless Wiring to power their ground up rebuild of a 1952 Chevy truck that was built in celebration of Speedway Motors’ 65th anniversary.
Speedway Motors employee Pat O. talks about the King Bee Headlight and a few conduit options available at Speedway Motors.
Pat shows off how easy wiring your LS can be with our LS wiring kit.
Unbox our most popular wiring harness with Tim.
Speedway Motors employee Pat O. is back to talk Ford Automatic OverDrive Kickdown brackets and kits.
Testing a 2 or 3 wire speed sensor sounds difficult, but these videos show that it actually is quite easy!
Follow along as Jeff installs an early 700R4 transmission for the big block in his 1967 Chevelle. See how this unit is upgraded and converted to a later 30 spline style.