I just had a b18a1 put in my car with a b18c1 gsr head i know the gsr redlines at 8100 and the stock b18a1 redlines at 6500 but if you put the gsr head on the b18a1 does the 6500 redline go up or does it still redline at 6500 if so that sucks cuz my vtec barley kicks in at 4500