Hi,

New here, I've been given three cylinderheads and I'm not sure what they are.

From punching the numbers through google I've found that they most likely go on a 2011-12 coyote engine though I'm not sure.

Wanted to post this here to see if anyone had a better idea of what this could be.

 

the part # prefix of "CR3E" means they were released in 2012 (denoted by the "C",) the "R3" means they were released on Mustang, so I'd say you have heads for a 2012 5.0. not sure if it's a Boss or standard, though.