on my malibu im using a stock gbody width ford 9 with 17x9.5 with 5inch backspace on 275/40/17 and its lowered 1inch with no rubbing or issues. no frame notch or trimming of the fender wells.
if it was me i would look for 17's wheel with a 5inch backspace and dont do a frame notch or go with a 4.5 and trim the fender well.
if it was me i would look for 17's wheel with a 5inch backspace and dont do a frame notch or go with a 4.5 and trim the fender well.