Interested in changing my 04 grand prix gt rims for the Gxp factory rims

Like the title says I'm looking to change to that, any suggestions? I heard that they are bigger which is fine due to the fact I need new tires soon. What do you guys think?? And if anyone has a picture of those rims I'd be very thankful. I can't find a picture of them off of a car anywhere. Also I will post a picture of a spot on my car for peeling of the black to show he chrome under it. It is ring below the windows I washed it one day and a chunk of the black paint came off reviling chrome under it. What you guys think bout that? Also sorry abou spelling errors I am on an iPod at school

IIRC the GXP Front and Rear have different offsets. There might be some issues with rubbing.

Grand Prix GXP's are front wheel drive, not rear wheel drive.

fronts are 18x8 and rears are 18x7 (rims), gm did that because they wanted the car to handle better, even tho it does not make a huge difference.

find four 18x8 and run those. running staggered is dumb.