i would have to say no, most shops dont have a convertor flusher anymore. they just replace, specialy when their fried. the o/p convertor probly dosent have a drain plug, so you would have to drill a hole and weld it up after. or he could get creative and tap it for a plug for future servicing. chances are none of the junk would have been sucked up through the filter and into the convertor anyways. just flip it over into a bucket and let it drain over nite and your good to go.