94-04 less backspacing
05-current more backspacing
for example the 08 18x8 factory wheels have 50 mm offset
the 08 17x8 factory wheels have 45 mm offset
the 04 17x8 factory wheels have a 30 mm offset
1.5 and 2 centimeters difference in backspacing.
I guess a little more specific information would be needed to get a good answer.
97 Mark VIII LSC/Silver/Gray leather
97 Cougar 4.6 Sport/White Opalescent Tricoat Metallic /Gray leather down but not out?
89 Cougar LS 3.8/Oxford White/Gray velour/HG need replaced AGAIN
00 Grand Marquis LS/Vibrant White/Gray velour
63 Falcon 302/black and rust/shed isn't moving
82 F-150/Oxford White/dumb VV carb doesn't pass emissions