What size muffler can I put in my AE92 FXGT?

[Crampy]

Hi y'all.
Well, it's about a month til I leave Texas and head back to NZ and was thinking about buying some more car bits while I'm here. (Muffler and catalytic converter)

I want to know how big a muffler can fit under my FXGT? Not at the end, but half way down. I want to buy a decent muffler (Dynomax Super Turbo) and not use just resonators, but the body sizes vary quite a bit. Eg: 6 inch round, 7 inch round and 4.25 X 9.75 inch.

I was hoping the oval shape one will fit, but the almost 10 inches seems like it'll be too wide.

Does anyone have a piccy of the underneath of their AE92, or knows how wide the muffler can be?

Any help greatly appreciated.