1969 Chevelle build sheet numbers changed?

[SS427]

I have very limited information on 69's as I study the 70. Can't say for sure but I believe Baltimore, Framingham and Fremont L78 lists it as M21 4 SPD CL RATIO with code XD in box 28. On a Kansas City sheet the same engine and transmission has the trans coded as XD. Somewhere I have the part numbers and codes but for the life of me I cannot find it. Maybe it was inputted incorrectly originally. As for the 4.56 code however I cannot explain that unless it was missed on the original order sheet and caught after the buildsheet was printed?

Touch base with Dale McIntosh as he has hundreds of 69 buildsheets in his database. He may be able to come up with on that was also scratched out and changed. I personally do not feel that sheet was tampered with after the car was built but rather was a line change of some sort for unknown reasons. jmo