4L80E question

[Tuffregal83]

just pick up a 4L80E trans
guy said it was out of a 02 sierra
yellow tag numbers read MC P 03 3 070
case number is 24208421
just want to make sure its a 02 to order parts
i would like to put in my 83 regal behind a 468 bbc
i do know its a 99 and up it has the seventh mount hole at top of trans
was told it was rebuilt in aug of 2015 but still want to go threw it and get the
right converter for my engine
any help would be great
thanks

 

[MC96]

The 4 or 5 digit tag (yellow I believe) with a barcode on it tells you what it came out of and the year, just google search the number thats there