just bought my father his old grand prix had the same one when I was kid trying to learn about the cars I grew up in some might hate me im a honda guy lol trying to connect with my father in our older ages 

Pontiac G8 wheels don't fit very upset dont know what new wheels to buy possibly new camaro 20 inch wheels? 

Looks like you got some work cut out for you guys. What are the plans?

I've paid for all the body work and paint already so I'm not doing any of that work she runs mint 400 posi rear end but I want to change the front knuckle or spindle to something that will fit the g8 wheels hub is huge up front

hay Kenny, what a cool ride mate👍

don't use the g8 wheels mate, besides the stud pattern being wrong the off set will be out too.

find your self a good tire shop and get them to advise you on the best wheels to fit your baby👍

see if they can do you a deal with trading your g8 wheels on something that will fit without having to change your hubs and bolt pattern,,,, way less stress mate 

Welcome bro. Cool ride man and AWESOME way to connect with your dad. Keep us posted on your progress and we love pics.