| They are line bored as one part therefore they cannot be separated unless you have them re-machined as one. They must also go back on the same spot in the same direction or else they will most likely cause the camshaft to bind. The profiles are the same but the snouts are different, you may use 40p cams in a 48p head as long as you also use the 40p cam gears. Why do you want to swap the exhaust cams? The intake cams are the ones that are different from JDM/Auto TT to USDM/NA
*disclaimer*: all that I say may be true or I may be completely wrong and I accept that.... please, it is your duty as another person on the internet to impolitely tell me how wrong I am :) "The dreaded 2nd windshiled wiper swipe when you turn it off its almost like tis showing you that it's boss, and it doesn't have to stop when you tell it to :("-College Boy (discussion on ptu relocation) "No good reason to put it there anyway. -Bernie (NoVA) False -vorpalZ False. -Bernie (NoVA) You're correct, there are 3 good reasons -vorpalZ False. -Bernie (NoVA) Wow, right again, just remembered another, make that 4 -vorpalZ" XD 
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