[Aus69c20]

Wheel vintiques do a 16” 8 lug steel rim which accept the factory hubcaps. I run these on my c20 in 7” width. If you like big diameter steelies, Detroit steel wheels do 20” steel wheels in 8 lug now.
Also be aware that a disc brake conversion will widen your front track. This makes the front track considerably wider than the rear. Unless you go 5 lug and then I’m pretty sure cpp do a modular spindle which maintains close to your original track width.
Here’s a picture of the vintiques wheels before I got tyres.