From what I've seen, most aftermarket gauges require a 240-33 ohm sender. There are a few that have the 0-90ohm (GM) or 73-10ohm (Ford). I'm using a stock tank that has been modified with an internal high volume electric pump (for the 5.7). I don't know what the ohm output of a stock Mopar sender is, ( unfortunately I don't have my old one) does anyone have a old sender laying around you could throw an ohm meter on?