Non stock Radiator fans...

I want to triple check something since I?m already down the rabbit hole. The 2015+ Chevy Colorado apparently uses the same on radiator Fan motor as the camaro.

And they are pwm fans controlled and tunable by hptuner.

So the fabricator I?m using for some work had the idea of running a cbr radiator to save space and make the approach angle on the prerunner much better. Which it is. Also a better core radiator etc.

He has plugged two fans in there which are not brushless (oem is one Fan) and he was going to add a temp sensor and tap into the wire harness that controlled the ac pump. This seemed too many things to fail, and since everything is resistance based I feared problems.

So all I need is to replace the fans with brushless and then find out from spal if they are 0-5v or 5-0v. So same as oem or reversed and then change the hptune accordingly?

Any other thing I need to worry about? My plan was to go from the oem single fan wire harness and split it ?Y? so both fans run at the same time, not staged.