Treat the Falcon Problem

I'M NOT sure what your experience has been with the Falcon, but before you dump it and spend money on a replacement, I'd try to fix the issues that concern you. The main problem with the Falcon when towing is the automatic transmission. I'd install an external transmission oil cooler, which will ensure the auto doesn't overheat and will remove the chance of having a problem with the factory oil cooler in the radiator.