Here is a tad-bit of information
Here is a little information I have about the St. Louis 1981 Corvette Manufacture Plant. These VIN's are specific to the St. Louis Plant.
The FIRST set of numbers are the production start VIN's.
The SECOND set of numbers are the Trim Tag Code.
The THIRD set of numbers are the Production Start Date.
The FOURTH set of numbers are the production stop VIN's.
400114
A25
22 Aug 1980
400775
403177
B22
22 Sept 1980
404136
417229
F21
21 Jan 1980
418399
418514
G02
02 Feb 1981
421392
418792
G04
04 Feb 1981
421392
420141
G17
17 Feb 1981
421392
421794
H04
04 Mar 1981
424742
422162
H06
06 Mar 1981
424742
424883
I01
01 Apr 1981
426422
426725
J05
05 May 1981
428003
429559
K25
25 Jun 1981
429775
429831
K30
30 Jun 1981
431611
Example of my L81: VIN ****S41940*; Trim Tag: G09. Reference to the above chart shows that Rare81 was BORN February 9, 1981. These are St. Louis built VIN's.. St. Louis is indicated by the S while Bowling Green is indicated with a 5.
Production figures vary from a low of 93 units a day in February 1981, to a high of 163 units a day in August 1981.
I’m not sure about the VIN of the LAST Corvette built at St. Louis.
I haven't done any research into this in over two years, so this is all the infomation I could find in my files. I don't recall haveing information like this from Bowling Green L81's