Crap I'm wrong on year, sorry I'm way wrong mine was 65, that is my fault. I was not paying attention to my own post. My tranny was impala 65 not 69. I apologize. My partial Vin was S2 it didn't have a number before it, it was the casting case numbers that determined mine was a 65
In that case, 15S
1xxxxx could be
either a full size car
OR a Corvette because both started at VIN 15S
100001. There were only 23,562 Corvettes built in 1965, so the last Corvette was 15S123562. If the partial VIN starts with 15S
2xxxxx, then yes, it's from a full size car.
Ed