I run stock 87 M body 15x7" steelies, want to say they are 4.5" BS, but might be off on that. This is in a 65 Cuda.

later A bodies have a wider track mostly because they widened the front end on these cars, adding discs widened it more.

They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.