Thanks for the reply,I see you looked at vintage velocity stacks and see what all was or is called a" velocity stack" a term used very loosely, I considered my part a velocity stack for lack of a better term or name, I know it does not meet all requirements for a perfect velocity stack, but it mounts on the throttle air horn ,lenthends the distance to the 90 degree and is smoother than the rubber tube and "looks a velocity stack". So what else would you call it,it sure is not a throttle body spacer. I agree with what you say but it is just as much a velocity stack as some of the ones "Google vintage velocity stacks" shows. So Google would call it a velocity stack,Wikipedia would not or at very best a poorly designed one. Thanks again for the reply