17" wheel info needed

I run Ridler wheels that look pretty close to the ones you’re looking at. They’re 18X8 with 4.5” backspacing. Tires are 235/40-18 all the way around. This is on my 71 Dart.
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@72bluNblu Would these work i feel like it would be the same situation or by going to 18" make it better??? does a dart have better wheel openings or is it because of the disc brake conversion