MTech2 rear for coupes is non-existent. You have to go with OEM... The sponsors on E46fanatics were supposed to have them in NOV 2008, then JAN 09, then March 09.... and now it's postponed indefinitely. I just caved in for an OEM bumper. Look on eBay, sometimes there are OEM pieces there for close to wholesale (~500).
For a MTech2 front contact Paul@DTM-Spec (www.DTM-Spec.net
). He's got fantastic pricing and will usually help you on shipping to Canada. I've bought plenty of body kit parts from them over the years and wouldn't hesitate to go with them again.