66 coupe deville

just wondering what offset, backspacing etc is needed for 20inch wheels on a bagged 66 coupe deville so it will lay.cheers

sence no one else has chimed in...

The early Cads pretty much use an '88 to '98 full size Chevy off-set. I'm not exactly sure what the numbers are, but I'm sure any educated wheel guy would know.