catalytic converters

what would you guys recommend i replace it with?
i found this over here: http://www.modernperformance.com/all...c_covert.shtml
would that work? can you suggest something better, if available?
and how much should it be?
also, should i replace the other one while i am at it too? and if not, would it be ok to run one type of cat on one side and the OEM cat on the other side?
i know, a whole bunch of questions....
thanks!


