3rd gen camaro drift wheels?

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so im building a 3rd gen camaro drift car and was wondering about wheel offsets. looking to do some 18" inch wheels but unsure what width and backspacing to use. i want the super deep lip on tha rear and largest lip possable to fit the front without rubbing. any help would be great!

<a href="http://s147.photobucket.com/albums/r305/lowboyzgrl/?action=view&current=littlesizecamaro.jpg" target="_blank"><img src="http://i147.photobucket.com/albums/r305/lowboyzgrl/littlesizecamaro.jpg" border="0" alt="camaro"></a>