Bodywork newbie here. I'd seen that these rings looked to be the desired kind because of the inner trim ring that can be taken out. Is this so that adjustments can be made to the headlight from the front instead of having to pull the tire off? I'm asking because I don't know if you have to flip the bucket mount screws like I've seen in how-tos before or not. I'd also like to tunnel these a little. How far back do you go? I'd thought these were the Merc style, but they're marked as Ford. Only reason I'm concerned is I'd heard Ford bezels were pot metal. I've been able to stick a magnet on these. Do I have the right type, or will I run into trouble? And not that it matters, but these are going on my '54 Chevy. I'll try to post pics. Thanks for the help!