The 99+ JDM B20B is the higher compression one. Another way to tell besides the intake manifold, is to look and see if there is a knock sensor in the back of the block. Only the higher compression B20's had the knock sensor. They are hard to find, so consider yourself lucky if you get one...I looked for a while and couldn't get one in SOCAL.
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2015 Ford Mustang GT Fastback - Ingot Silver - 6M - Performance Package - Gibson Catback, JLT CAI, FR 47lb injectors, BAMA E85 tune, Eibach Sportline, BMR wheel hop kit, UPR oil separator, Steeda shifter bushing/bracket
Team B.O.B.® - Ballaz on a Budget