How to identify the different VTEC heads

Can anyone tell me how to identify what type of VTEC head I have?

what does the intake manifold look like

Its a B16 though isn't there different types of B16's

Well, you can look at the head code, and if it says PR3-X on it, it is the B16A/ITR family cast, then use that and hte date to find out if it's ITR or B16A, and what year it is.

Where do I look on the head?

its on the right below the valve cover on the front of the head