It's an incomplete VIN - it should be 17 digits. All that can be told by what part of the VIN you have is that it was a General Motors product manufactured in 1987.
17 digits
1996 Yamaha YFM350X (Although the digits are invalid, a VIN similar to the one you provided may belong to a motorcycle that was manufactured in by the Yamaha corporation.)
There aren't any VIN #'s back then.
The VIN is 17 digits long.
http://www.ibts.org/label_req.shtml
That isn't enough digits to be a VIN. A VIN is 17 digits long.
8k4 008797
Hud no: 461725-461726
VIN is the vehicle identification number. The VIN is a string of 17 digits that makes it possible to identify and track the activities of a specific vehicle. The VIN never goes to 20 digits.
17 digits in VIN. 10th digit signifies model year.
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