well refering back to the original question of which this thread started.... i beleive the U.K. sr20 is the best when it comes to the n/a sr20 game. becuase it has higher comression pistons, larger cams, and sodium filled valves. but the low port version is slightly better due to the better designed intake manifold. the high port comes with a tubular header and the low port comes with a casted exhaust manifold.
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