I am looking at a 1979 Regal with a regular V6 to possibly build up with a turbo motor. I wrote the vin number down to check it out but it is only 13 characters long. Is this typical for the older style Regals as my 1987 has 17 characters in the vin. The vin on the car I am looking at is 4J47AAH129365... Does this sound correct? Any help is greatly appreciated, THANKS...