I'm not sure, they re-built the houses in the course of time so often I don't think anything is left. The original props went somewhere but if I remember correctly Joe Dante once said that there is hardly anything left. I mean come on, they even shot an alternate ending with some dead cheerleaders in the Klopek's trunk (it wasn't just an idea, they actually shot it) but according to Joe Dante on the German Blu Ray no one knows where this alternate ending is today. It just got lost.