I was thinking of putting Curcuit Performance CP21 on my 46k mile 03 Sonic Blue Cobra. The wheels are 18/9.5 +20 offset and 18/11 +20 offset. How will they fit and does anyone have any experience with the wheels. I want the look of classics but cant pay 5 grand. These 4 wheels cost 600 shipped to the door off amazon. Any info please let me know thanks!