wheel fitment question? 67RS

[67_camaro]

I have 67 Camaro and I mini tubbed it 2 inches wider. I also shortened the rear end by 1 inch from both sides. I was wondering what's the biggest rim and backspace I could fit in?

[armourmark]

You should be able to get a big boy in there. I have a 67 Camaro with a narrowed rear and no mini tubs with 19x9 275 tire.