mark
+1y
the 15x7 with 2inch backspace would be your best bet.
a 7.5 inch wide wheel needs a 5.5inch backspace to tuck. that's a 2inch front space which is what the 15x7 with a 5inch backspace has, so it will tuck, but it will be close. make sure to get the correct tire width so the tires do not buldge out and rub the bed sides
and those wheels are not hubcentric, so you will have to get some buldge lug nuts mostlikely to keep the wheels centered. dunno bout anyone else, but my mazda did not come with a-corn or buldge lugnuts, mine were flat. so if you already have acorn or buldge lug nuts, then you'll be set
that'll be sweet, when u gettin em