Help me identify this Ford engine for a customer...

thank you I'm kind of going to want to take the heads off just to maybe put new valve seals and get them cleaned up a little bit. I just didn't want to take anything apart that I wasn't confident in putting back together... As you can see it needs mostly just a good cleaning but there is a lot of crud built up in the heads... Likely will just give it the old clean and reseal treatment and maybe throw on a few new little trinket parts...
I took my stock 360 and swapped on an eddy aluminum intake, Holley 650 4 bbl and a set of blackjack headers...that engine really woke up! Loved that truck!