'73 up drum to disc conversion track width change

I've got no clue on track width, I simply offer up a few pics. 72 Duster. Front converted to later A body disc 4.5 BC . 8.25 rear from a 75 Dart . Front wheels: Wheel Vintiques Rallyes 15x6 4.00 Back space 205/70-15 . Rear: WV 15x8 4.5 bs 275/60-15. Front tires would very rarely rub when turning sharply on uneven ground like parking in a hole in the yard. Rear tires were very close to the leaf springs and would sometimes rub on sharp turns.

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