Bigger? Not really. More efficient? Probably. There are standard duty and heavy duty options for this application. The Chrysler number for the HD version is 52080104AC. If this is not already the version you have installed, you may see some improvements. You mentioned in an earlier post that you have "replaced everything". The fan clutch is a failure point for these vehicles, and is often overlooked when thinking of "coolant system service", as is the electric cooling fan and relay.
