Im selling the wheels on my car and im wanting to get the wheels off my bros vette, 18 by 9.5 in front and 18 by 12 in rear..what would i have to do to fit these wheels? I have 1 1/4 spacers in the rear right now just to give the appearance that i wanted..im pretty sure i will NEED to keep the spacers with the 12" wide wheels..any input will help