Therefore a good option for you perhaps is to buy a new ANSA (or such) resonator (OE part, $170 odd USD) and freight it in, or goto ASV (new parts dept) and also South Yarra Auto Parts in Alexandria to get a price on this beforehand. Let us know how much it costs btw. This is what Gayle has and she loves it, search for her thread, the pics are good and her descriptions of the outcome are as excellent as ever a contribution.
If time to do the rear muffler too, stock is great, about $230 US I believe. If keen for compelte stainless and more noise the only way is the complete SuperSprint setup or an Eisenmann muffler and stock resonator as above.
Remus also make them and many vendors claim they are all stainless systems too, but I don't believe it looking at their e34 product- perhaps you can check this? They are distributed in QLD, that's all I know about them, apart form the tips looking nice
