Please feel free to add or correct any misinformation I have posted below.
I believe the 1st letter in your number should be a J, not a Y.
The first 5 digits of all SVXs ever produced should be
JF1CX
JF - Maker ID (Japanese / FHI)
1 - Type of vehicle
1 = passenger
C - Line (Subaru C line)
X - Body type (coupe)
There are no "I", "O", or "Q" allowed in any VIN, so the other digits are incorrect.
Digits in red below appear to be incorrect
YF1CXWBLOEH003651
Where did you copy this number from?
There should be a VIN plate on the driver's side dash, visible through the windshield.
PICTURE
There should also be a plate on the door jamb under the lock. This also shows the VIN and the date of manufacture.
The 1992 model year uses an "NH, followed by the production sequence numbers (There is no "E")
PICTURE
There is another one on the front strut tower, under the hood.
PICTURE
The VIN as also stamped on the firewall, behind the engine
From your first date of registration in Germany, it is safe to assume it is a 1992. Check for the actual VIN plate on the door jamb for the month and date.
For more information on decoding the Subaru VIN, go
HERE
.