No worries mate I just got back from my bush block 100km south of Darwin and back in Canberra for a week or two before my next trip north.
I have a couple of stock headers/collector and chrome covers etc. I have a cat free high flow crossover to suit stock collector and or a single pipe converter /connector to run a single RHS pipe.
I sold the 3 pipes exhaust cans but still have all the chrome covers for both sides.
I think I have a stock 3 pipe crossover with cat inside too in storage 30 km away.
The stock Roadster twin pipe crossovers are cat free as cats in exhaust cans on those ABS models.
You will not need cat converters to pass rego though, even in Victoria will you?
I do have a couple of pairs of stock Roadster exhaust cans too but these have different frame mounting points to the stock 3 pipe systems and would need a simple adapter bracket to fit.