you can but you will probably burn the rubber exhaust hose between the headers and the tips. If that happens, that boat will probably sink
If you're still going to run the dump lines into the collectors, the rubber hoses will be fine but then there really isn't any point to running the headers dry.
You can ask 454blueboat on the Banderlog board about that burning the hose thing, it just happened to him a month or so ago.