Remember, the Street Rods will have the Reactor coverstock, which is stronger than you think. It's the same type of cover as we've seen on the Agent, Spit Fire, and Tropical Storm. Even with a weak core, the Reactor is going to grab the lanes a lot. I'd say they're going to be more medium to medium light condition balls at best. And if the lanes are absolutely fried, then yes, plastic might be your best friend.