I think this topic has been mentioned before, but I'd like to dive into it a bit more.
The owners manual for my 2024 Ford Expedition contains the following notes:

Following the second note are plan views of a sedan, a van, and a pickup truck (no SUV, though I suppose the van would apply) with antenna locations indicated. In call cases, location 1 is on the rear bumper, location 2 is at the rear of the roof, and location 3 is at the front of the roof. That's followed with this chart of maximum output power for various bands and the three locations:

The 2022-2024 Expedition SSV Modifiers Guide contains the following in a list of "considerations" to keep in mind:

Later in this document, under Mobile Radio Installation Guidelines, we find the following:

In the Antenna Location and Installation section, it says "permanently installed antennas are preferable over magnetic, glass, or body lip mounts for anything other than for low power or temporary installations." Did @mmckenna write this?
Mag-mounts are out since Expeditions have an aluminum body.
So, here's my dilemma. I park my Expedition in my garage. The clearance between the garage door and the Expedition's roof is less than 6 inches. I could put a 1/4 wave antenna for 440 MHz or GMRS up there, but anything else is going to make regular contact with the garage door. I suppose that a 1/4 wave for 144 MHz would work if it's flexible enough.
My initial plan was to use one of these vehicle specific mounts on the left side of the hood: NCG - FO3ANTNCG - Mount for F-150, Super-Duty, Expedition - cometantenna . But, the "consideration" about antennas near the ABS controller has caught my eye. Yes, Comet has a similar mount for the right side. But, I'd really like 2 antennas (the Expedition has no whip antenna for broadcast receive, so that's not a concern).
What do you think? Should I heed Ford's "consideration" and not mount an antenna on the left side?
The owners manual for my 2024 Ford Expedition contains the following notes:

Following the second note are plan views of a sedan, a van, and a pickup truck (no SUV, though I suppose the van would apply) with antenna locations indicated. In call cases, location 1 is on the rear bumper, location 2 is at the rear of the roof, and location 3 is at the front of the roof. That's followed with this chart of maximum output power for various bands and the three locations:

The 2022-2024 Expedition SSV Modifiers Guide contains the following in a list of "considerations" to keep in mind:

Later in this document, under Mobile Radio Installation Guidelines, we find the following:

In the Antenna Location and Installation section, it says "permanently installed antennas are preferable over magnetic, glass, or body lip mounts for anything other than for low power or temporary installations." Did @mmckenna write this?
So, here's my dilemma. I park my Expedition in my garage. The clearance between the garage door and the Expedition's roof is less than 6 inches. I could put a 1/4 wave antenna for 440 MHz or GMRS up there, but anything else is going to make regular contact with the garage door. I suppose that a 1/4 wave for 144 MHz would work if it's flexible enough.
My initial plan was to use one of these vehicle specific mounts on the left side of the hood: NCG - FO3ANTNCG - Mount for F-150, Super-Duty, Expedition - cometantenna . But, the "consideration" about antennas near the ABS controller has caught my eye. Yes, Comet has a similar mount for the right side. But, I'd really like 2 antennas (the Expedition has no whip antenna for broadcast receive, so that's not a concern).
What do you think? Should I heed Ford's "consideration" and not mount an antenna on the left side?