I just got some JDM cams and am wondering if i should install both or just the intake? I was thinking because the JDM's have around 35K on them and my current cams have around 60K on them that i should just do both so that the wear on the cams will be the same. Will having both JDM's decrease the power of just one JDM intake and the stock exhaust?

no it wont decrease the power of having just the intake cam on if you put both on.
Sean

are the JDM cams better than the 91-92 cams??

yes the primera in the 10-1 motor has a better cam than the usdm sr20de highport cam.