guys I'd like to know the standard factory size / dimensions of the 7A-FE exhaust system (headers back) please? Also possibly the 1ZZ-FE and 2ZZ-GE systems as well please. I only want to know standard factory sizes. Reason being is because I recently got an exhaust system (high flow cat, 2" system, resonator, straight through muffler and twin droopy tips) put on by *name of business* who stuffed it up completely and are not willing to fix to what I wanted. Even though what was said before payment was made it was written down. And yes I realise that it is difficult to quieten an exhaust or get an exact note... but still I don't understand why they could not match what every other corolla aftermarket exhaust note has? It has that buzzy "ricey" noise and in my opinion is extremely loud. Here's an example and pretty much exact exhaust note I have on mine. http://www.youtube.com/watch?v=OJXAR8dNuQA So if any could help me out it would be greatly appreciated. The exhaust shop I went to is located in Brisbane at Geebung. I can not name the business on public forum... so pm if you wish. Or even if anyone knows an exhaust shop that can actually do a good job and located on Northside of Brisbane 4034.