Check for Private Import
Private Imports aren't all that common but with more deregulations of import laws in Australia more and more people are privately importing EXA's into Australia.
A dead give-away that an EXA is a private import, is that it will be a 1.6 L and have rear end disc brakes (with ADH7 embossed into the rear drivers side caliper).Another clue is, next to the cigarette lighter will be diagonal slotted holes similar to the shape of the brake lights.
Also there may be various Japanese stickers in the engine bay, sunshade and warning sticker for the targa roof.
Best bet is to buy an original Australian import, that way insurance won't hassle you about having a private import and you'll probably get a 1.8 L.
Although there is nothing wrong with buying an import, remember you do get the high compression 1.6L motor which derives it's power much earlier than the 1.8L, you should at least know what you're getting to knock the price down a little.
Crank Angle Sensor
This item is connected to the exhaust camshaft on the twin-cam engine. It regulates the timing on the CA18 engine depending on input from other sensors (such as air-flow sensor, EGO sensor, temperature sensor, etc). A good Crank Angle Sensor allows the EXA to acheive optimum performance and fuel consumption. The CAS can be worn out when mileage is high, this leads to inaccurate timing of the exhaust camshaft.
You know when the CAS is stuffed when the EXA seems to detonate at certain points (eg. choke turns off, soft to hard driving, warm and cold driving). It will seem to chudder and spit irregularly.
Pop-Up Headlights
This goes for basically all cars with pop-up lights. From time to time the pop-up headlights will fail to "pop-up" or "fall-down". Hitting it won't help, but there is a knob behind the headlights located in the engine bay which can assist the headlights in functioning properly again.
Check that the lights pop-up and on, from turning on the lights. And push the "stay-on" button in the cabin a few times, to see that it functions without turning on the lights.