isnt the EGR just the bung for the O2 sensor? if so you could just take it to a weld shop, have them hack off and close up that bung, and weld on another bung for the 02 sensor...does the racing mazda mx6 header eliminate the cat also? if so, you could get it the way it is, and pay about 30 bucks shipped for the 02 sensor fix from apex motorsports AND theyll send a bung...let me know, i might change my mind on the overpriced (but only available) AWR headers