67 Chevelle SS396 wheels

[JHS]

Restoring a 67 Chevelle SS396 and having trouble determining the correct wheels - steel vs. rallys; 14" or 15".

The car has front disc brakes so some say I should use 15" rallys. Others have told me I should use 15" steel wheels w'/dog dish hubs.

I can't find anything stating that front discs came with the SS package or were optional for all Chevelles. I did not see an RPO number for rallys in 67, much less 15" wheels at all so I don't know if the front discs were ordered for the car or came with the SS package (inquiring minds... doesn't really mattter).

Any help will be appreciated.

Joe