8's will go on the front, but both Adjustable Top Mounts and Adjustable TCA's need to be fitted really. Kit and arch needs to be basically trimmed back to flush (i.e lip completely removed) with 215-225 on the front on a 30 profile.

Exstensive arches mods will be needed on the back, same as front but tubbing will need to be done i think so the wheels dont extended massively past the arch.

If you wish to get the arch "Properly rolled" and i mean rolled and not just trimmed with a grinder its gonna cost mega money to make it look good and factory. I think you will be taking a gable with the rear as regards offset so they dont hit the suspension strut.

Im only going 9's on the rear beacuse of this reason