How to tell what head gasket I have?

[jacobzking]

I bought this motor and it looks to have a metal HG (partial metal loop sticks out. How can I tell what head gasket it is? Is it as simple as taking a micrometer to it? About to get Enthalpy tune and not sure what to say on this. Thanks guys!!!

[Drift_86]

Just open it

[jacobzking]

Just open it

just open it? open the head? then what?

[fliprayzin240sx]

Just tell Enthalpy you got a metal HG and you're not sure how thick it is. Its not like metal HG will drop compression that much to make difference in their rich ass rom tune.