Bigger as I recall for the Aeromotive. There are three of us building 600-800 HP motors for our SyTys. One guy pits for a Sprint car team and sourced a fuel filter from their supplier that was much less expensive. Its about two thirds the length and similar diameter to an empty roll of paper towel. We run them pre and post pump. These things, Aeromotive included, are NOT stock upgrades. They are meant to be part of a complete upgraded fuel system. You could retrofit them I suppose. But I wouldn't think its worth the hassle.