GPZ900R exhaust options?

My GPZ I bought recently has a Megacycle 4 into 1 on it and it is buggered. I have a good factory exhaust for it now. (assuming GPZ750R fits) I do however wish to buy a good, or new four into one for it that allows the centrestand to be retained. (megacycle does not) Any ideas on what is available? I would prefer an Aussie brand. What di you guys run who used to have a GPZ?

I have a Yoshi 4-2 on mine

What about Staintune in NSW Tony?

There is an idea! Have been looking at Tranzac too. Want an Aussie pipe.

I have several bikes with Tranzac's and they sound great.

Ancient post but I will ask anyway - how did you fare finding an Aussie exhaust?

Bought a Tranzac and it is a piece of shit. Dude who made it/sold it to me incredibly rude also.

Bummer. I'll make a note of that on my site. What was Plan B?

Didn't have one. I have a Megacycle 4 into 1 now but inconvenient exhaust- you need bellypan mods, have to lose the centrestand and remove the pipe to do oil/filter.