Can't identify my heads

[Don Fiveolio]

OK, they're e7's cool thanks

 

[Don Fiveolio]

Here's what they look like

I have searched Stangnet as well as several other forums to try and find out to no avail. Are these e7's or e6's?

 

[pistonhead351]

almost impossible to tell in those pictures, it should say on the bottom side of the head under the exhaust port.