1967 Firebird with C5 Base Model (325mm) Front brakes

[ATovar]

Hello and thanks for reading! I am currently building a 1967 Firebird and am getting to the point of the project where I need to select wheels for it. I really like the Year One Rally II 17x8 (4.5” BS) wheels they have for the fronts. For the rears I would like to go with the 17x9 (5” BS) wheels on a stock non-narrowed 10 bolt rear end. I was wondering if anyone has installed these wheels on the same brake setup? I’ve looked around and saw some people use spacers, and I’m willing to run them if they’re not too extreme or unsafe. I also am running CPP tubular upper and lower control arms with C5 hubs for more info. Any help is very appreciated!