How to tell if pistons / head is stock? images inc
 

So I'm trying to figure out if the head i have is stock or built at all? Also if pistons are stock?
https://preview.ibb.co/gMyydc/IMG_20180429_170305.jpg
https://preview.ibb.co/fJTydc/IMG_20180429_170324.jpg
https://preview.ibb.co/cW2frx/IMG_20180429_170330.jpg
https://preview.ibb.co/na5Byc/IMG_20180429_170337.jpg
https://image.ibb.co/meXryc/IMG_20180429_170340.jpg
https://image.ibb.co/feBUjH/IMG_20180429_170345.jpg
https://image.ibb.co/edE4Jc/IMG_20180429_170355.jpg
https://image.ibb.co/hOmJdc/IMG_20180429_170359.jpg
https://image.ibb.co/jS00rx/IMG_20180429_170437.jpg
https://preview.ibb.co/kYfpjH/IMG_20180429_170455.jpg
https://preview.ibb.co/jPzRWx/IMG_20180429_170504.jpg
https://preview.ibb.co/fRLByc/IMG_20180429_170516.jpg
https://image.ibb.co/mqdLrx/IMG_20180429_170532.jpg

looks all original to me

Agreed numbers on both confirm OE parts

Thank you both!

Also, 54C pistons are supposed to be (95-?)97-98 blacktop versions, supposedly better casting than the original REDTOP variety FWIW