I was recently given a 1991 Jotul 8TDC with a blown cat. Its going in a tree house (1000 sq feet), and am wondering if I can run it without the cat. The other thing I was thinking about is the other series #8 are non cat and could be converted over. The refractory housing is melted and looks like it can be replace with the non cat housing. Are there more then ones to skin a cat? Or do I just need to poney up and get a cat and housing, (something I can't afford now but would like heat). Thanks all!