This message is for those of you waiting for GReddy to come out with an exhaust system for our cars. I called GReddy today in California and ask them about the Mazdaspeed Protege Evolution cat-back system. They told me they just finished the prototyping process for this exhaust, now it has to be manufactured in Japan and ship to the US. The guy told me it will be about 1-2 months before we can get it. I asked him about the diameter for the piping but he said he did not know. I asked him about a part number so it will be easier to order from a dealer, but again it didn't know this either. Oh well, I guess we just have to wait and wait.