i remember there was a discussion on this a while ago but i can't seem to find it. anyway, my question is this. will a cat, stock or otherwise, survive after the installation of cams (be it single like the esslinger or a pair like crower)? if i remeber correctly the discussion pointed out that a stock cat would be toast after cams but nothing was mentioned in regards to an aftermarket cat. would it be possible to run an aftermarket cat or is an ORP/race header manditory?