Spark Plug Heat Shields?

[Luis_gz06]

Today I was trying to put the stock heat shields in a 72 and only one did not lined up where it bolts. It's on the passenger side where the temperature sending unit goes. Iv'e seen here a few 350's engines with that hole where the shield bolts to. On mine, that mounting hole is not there. It's solid!! Only the one next to the one that's supposed to be there to mount the shield. This is a crate 350 engine that I bought new in my local chevy dealer 6 years ago. Is there something wrong on this crate motor? Why isn't that hole there? Here's a pic. Thanks!