So here's my situation. I have a 98 ek with a d16y8 with almost 200k miles on it. Previous owner didn't really do a great job maintaining it so I'm stuck now trying to rebuild it. I had a valve lash problem did the adjustment but still have that damn rattle noise. I was told my valve springs are most likely worn out but Honda can no longer get the stock valve springs. So I'm now looking at aftermarket. Question is can I put performance springs on a stock cam? Or is there a performance can I can put in that I won't have to worry about emissions and tuning. Since I can't go to obd1 and stay legal.