which head do i have

[Aaron91RS]

Alright I feel retarded but looking at google images I noticed something.
My head isn't the original.
I figured my head was an early 1g because the 2 end studs on the exhaust manifold are the same size as the rest.
Ok no problem.
Then I found this pic

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My head has the flat part between the exhaust port as shown on the 2g head in the pic but it has the other 3 circled parts as shown in the top pic?
So any specific year have all these combinations?

 

[BogusSVO]

what are the casting numbers? on the therm end of the head, around the oil galley plugs?

 

[donniekak]

Turn it around and show the intake ports.

 

[Aaron91RS]

it's in my car so I can't just turn it around.
It has the 3 equally spaced tstat holes so it should be a 1g.

 

[donniekak]

If all of the exhaust studs are the same size it should be a 1g. The 1g water housing can bolt to either head. The easy way to tell in 1 second is to look at the intake ports.
http://www.dsmtuners.com/forums/cyl...ast-one-1g-head-vs-2g-head.html#post151790485