Well I have got the MR2 back from Hi-tech mufflers and am quite happy with the Job that Nick and Lambros did. Unfortunately they were not able to do a proper dump pipe off the turbo so they modified the factory dump pipe by removing the cat out of it and building a stainless cone off the bottom to improve the flow and then put a high flow metal cat in the exhaust after the dump pipe.
The exhaust is 3" off the dump pipe and then splits into twin 2.5" out to the tips, I am happy with the sound its got a nice deep note, I would have liked it a bit louder but at least I doubt I will ever have any problems with getting pinned for noise with it. I am happy to have the nice twin tips on the MR2 now as I think it looks much more balanced then what it did with the old single side exit exhaust and there is a noticeable performance increase after the exhaust.