They're slicks... how much street "driveability" are they really gonna have anyhow? For what you have in mind I think you'd be fine. My dad's Model A hot rod had M/T Pro Street bias plies on it with matching M/T fronts for years. He wore out the fronts and againt my advice he replaced them with a pair of radials. He claims it drives better than it ever did with bias plys all around. I know thats backwards compared to what you want to do, but again, I think you'll be fine, especially if they're brand new. I never had the guts to drive around too much on these oldies, but they sure did look cool.