IDK where my kid bought this carb but it was brand new in the box when he did, if it wasn't Summit/Jegs it was a similar type place, though he got it online.... wasn't from a private individual.... but there was no "manual" of any kind among the paperwork in the box, just a reference to "Holley.com". on the outside of the box..... I prefer the "old way" of doing most things..... I'm not a "dot com" kind of person.