I'm looking at grabbing a cheap 3rd gen for a mate to learn to drive in. I've had one before and it had b20a6 which as far as I was aware all aussie 3rd gens had. This one has an old looking rocker cover.

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Going by the rego papers the engine No. is B20A5576081

So by that I'm assuming its a B20a5, but from a quick google that's a US engine and the pictures don't match.

It has stupidly low K's and the vin number on the rego paper is weird as well. I'm thinking it could be a jap import but I've really got no idea. I'm going to look at it tomorrow but there seems to be too many weird things about it.