Finally get to pretend I am one of the cool kids - Holley kit swap

I am also planning the factory dual fan setup. To add to my confusion I came across something about pulse width modulated (pwm) fans and wondered if that impacts the choices. The suggestion was that later models used pwm fans and thus need the appropriate ecm signals to control. But when I check RockAuto I see the fan assemblies and their applications sometimes span from 2008-23. Thus, the pwm fan comments I came across on the interweb do not appear to be an issue. My current assumption is that they are on full speed or off through the use of a standard relay.