I'm sure that any good aftermarket struts could be made to fit without an engineer's degree. A pair of struts to fit a Commodore wagon rear gate cost around $50 when I got them a few years back.

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MY99 WRX sedan WRC blue Sold :(
MY99 WRX sedan Dark blue pearl :D
MY97 Liberty Outback Ltd Wagon
1990 Mk3 Supra turbo fully rebuilt 7M-GTE (Older son)
1991 Celica GT4 (Younger son)