^^ This.
You can Re-dial Cams / Crank Angle Sensor / e85 and a Re-Tune but the is not much more unless you go HKS V-Cam on a 2.6lt or go 2.8lt. or 2.8 V-Cam / Rebuild.
Yeah it checks out, all good.
I guess you can, it's just a matter of finding every single VIN, running them through the system and finding out which year is which.
But you would have to have a lot of time on your hands
I see.
Well it looks to be built in Jan 1990.
Couldn't tell you much about the FAST System, best check with Miguelone (Michael).
He has posted on the last page.
There were complications with that VIN but it was narrowed down to 2 results.
RS13
Hatchback
CA18DET
2WS (No Super HICAS)
Built: Jan, 1990
Grade: Type 1
Manual
Only difference with the other result was it saying Automatic for the transmission.