Import check

There should be a vin stamped into the bulkhead that's between the cab and the frunk, drivers side from memory.

Also should be vin plates on the bulkhead between the frunk and the radiator.

If they're not there.... Well.... That's a worry....

Dudeman?

What colour is the car? The colour code is 202 on that plate, toyota 202 is black. The VIN on the toyota plate is from a car that was built 03/1990 as a GT/GTS model t-top. Can't tell if that car in the pics is green or black. Put some shots up of the whole car, someone may recognise it and help out with some info. 
 
I don't know why that plate with the 'import vin' is placed over the top of the chassis vin, thats a no no afaik. There should be no reason to cover up any identifiers on a car. 
 
If you really wanted to know if you have something dodgy i'd be taking that import vin plate off and see what is stamped into the chassis - that's your first port of call.

There may be a genuine original vin punched into the top of that strut tower between the four mounting bolts.
Don't go buggering about drilling rivets out of those existing plates yet.

Locked On
Well $25 later and it would appear that its a 1996...
Gold colour ,   was reg in qld as per the story.
From www.revs.com.au

Imported in 1996, built in 1990. I saw an old thread where someone else was trying to ID an import, it also had a import vin riveted over the toyota stamped in VIN. No idea why that would be done, just makes it look shady to me.
 
But hey, if you have the papers to prove its ID and its been registered before somewhere in australia you're on the right path. Not so long ago another member bought a car that had it's VIN plates swapped over from a ADM car to a JDM one, it ended up not being stolen, but was imported as 'race only' and even though it had been used for years on SA roads with its swapped VIN it couldn't pass ID checks to get rego in QLD or NSW. (can't remember which state)
 
Well good news if its what its supposed to be!

That import VIN most probably uses local codes for the place doing the compliancing and other 'things', for some reason the authorities here deem the date of aus compliance to also be its year of manufacture - which would make things amusing if you were importing a vintage car but just a bit annoying for someone like yourself. Each state has their own regs for how and what is done to compliance an import, so it can be pretty confusing. 
 
Your actual toyota chassis number - SW20-0010853 - it's number 10853 of SW's built, thats pretty early in the run. Some people can let you know month/year of build of your car from the chassis number (ADM cars all have this on their VIN plates) - your build date from that chassis number is 03/1990.

Hi Locked On, everything Dudeman has said so far is correct.
Just to help clarify (I own an import too), most of the information you require can be translated from the factory VIN plate.
Don't worry about the "6F91mportthxa7042" plate, all Japanese domestic market cars simply had the chassis stamped there (in your case it should be SW20-0010853 underneath), the plate would have been added at some stage during compliance.
 
So to translate the factory VIN plate:
MODEL:     SW20  = MR2 2nd Generation
                 AJMZZ = J for T-Bar Roof
                 MZZ for GT/GT-S Type
ENGINE:     3S-GTE = Toyota S Series engine, wide-angle valve, electronic fuel injection Turbo
CC:            engine displacement in cubic centimetres
Frame No:   the frame/chassis number
Color:         202 = Toyota paint code/black
Trans:         E153 = transmission used in turbo models for the MR2
 
The best way to tell the build date for our cars is to look at the frame number, in your case it's SW20-0010853.
The SW20 went through 5 revisions, with the first revision being produced between 12/1989 to 11/1991 and having a frame number between 0000001 and 0059265.
As you can see yours was from the earlier run, further checks show it has a March 1990 build date (reference: http://www.toyodiy.com/parts/q?vin=SW20-0010853).
 
As the GT-S model was not introduced until December 91, your car should be a GT model before the revision 2 updates.
The leather seats also help identify it as a GT as the GT-S came with cloth seats, however this may not be as useful (for identifying models) as previous owners may have swapped them in.
 
Hope this helps clarify things.
 
Cheers

Thats some awesome info, I'm going to go home and check my VIN tonight just for shiz and giggles