A common setup is 17x8.5 et13 with a 6" barrel and 2.5" lip. Adding 1" of lip will decrease the ET by 12.7 mm. Ending at roughly ET0.
Another setup is 17x9 et06 with a 6" barrel and 3" lip. Adding 0.5" lip will decrease the ET by 6.35 mm. Ending at roughly ET0.
Here is my old car, running a 3" lip at the back. Only rolled fenders. With stock camber arms maxed out.



Hope this helps, and good luck with your project.
Leave a comment: