The Black Market grid heater relocation seems to work well.
It came with longer bolts to use with the throttle valve intact, but the factory bolts were spot on with the delete in place.
So far, no check engine lights.
I like this one because if I ever have to return to stock, it will work with the emissions intact, unlike the one from GDP.
I left the factory heater in place for now.
That should be fine, right?
It is still nice and tight, and my truck has 49k on it.