Well, it was an ugly situation - not only the timing belt gone. The water pump and tensioner were shot; the idle pulley had seized. It went from about $450 to over $700 in repairs just to see the engine was undamaged. I went ahead and had it done. And the engine is fine! So thanks to folks who responded to my question because without that I would probably have gone with the "manual's" description as an interference engine and written the Rodeo off.