so last weekend i was plowing snow with the 80 and my exhaust from the CATS was always questionable. leaked and just getting me by. so anyway i got stuck in the snow last weekend and while i was rocking it out the snow got wedged up around the CAT and removed the rusty pipe between CAT and muffler. a funny shaped piece. well that no biggie i can put apiece back there. but it also took out the back O2 sensor. i know i need it for the computer to run better or do i? but can i just get anyone. can i just not put it back. can i just put both of them by each other and redo the CATS and everything.