I have a brand new, never installed Holley Sniper EFI for sale. I was going to install this on my 65 Dart wagon’s 273/235 and went as far as reworking my engine compartment wiring and bought a different intake manifold as the Sniper wouldn’t fit my OEM 4 barrel intake. I’ve had this unit for about 2 years and decided to go in a different direction. Everything that was originally packed in the box is included: instructions, main wiring harness, a separate optional harness, oxygen sensor and it’s harness, clamp-on O2 sensor brackets, and handheld. I had discarded the styrofoam that held everything but will make sure everything is well protected should it sell. $500 firm plus shipping from 22657