that would be okay but rear wheels are generally a bit wider depending on what youre going for if youre going for a clean stock appearance that will be just fine IF you dont mind skinny tires on the rear. myself I like the biggest /widest wheels I could get on the rear but thats for the hotrod look
I agree 3 inch backspace is fine but if you have an 8 inch rim alot of wheel and tire are going to be hanging out.......kinda reminds me of the 70's