VIN:

World Manufacturer Identifier (1-3)	1FA	Manufacturer: Ford Motor Company USA Make: Ford Type: Passenger Car
Restraint System Type (4)	C	Active Belts and Air Bags (Front)
Vehicle Type (5)	P	Passenger Car ? Ford North American Vehicles
Line, series, body type (6-7)	44	Line: Mustang; Series: LX; Body type: 2-DR. Sedan Convertible; Body code: LXC
Engine type (8)	E	Liter: 5.0 SFI HO; CID: 302 ; Cyl: 8; Fuel: Gasoline; Mfg: Ford
Check digit (9)	9	is valid (see below)
Vehicle Model Year (10)	L	1990
Assembly Plant (11)	F	Dearborn, Michigan (USA)
Production Sequence Number (12-17)	167793	Note: consecutive unit numbering began at 100001

VIN Check Digit is calculated by applying a formula to the other 16 digits of the VIN. If the calculated value and the value you have entered do not match then there is a mistake in the VIN (or the calculation). However, a match does not prove the VIN is correct, because there is still a 1 in 11 chance of any two distinct VINs having a matching check digit. See here for more information on VINs and their check digits.