i need engine id help please

[hoopty-cuztom]

i pulled the engine out of the blazer its a 454. from what i know this was a new gm crate engine put in the truck i think around mid 80's. im am tryin to figure out for sure what it is so when i order part for this truck i can order the right parts,

now in front of the pass side head where it would have a # there is nothing i dont know if thats how it works on a crate engine or what.

on the back of the block i got a # 14015445
on the head i got # 14081045

i cant find an exact match for either of those numbers.

and if yall could tell me what year truck to get parts for that would fit this engine as gaskets and such that would be great

thanks for lookin

edit: pics