Hi im sorry if this topic has been talked about already but I am new to thumper talk. I have a 2000 Wr400, and my friend has an old set of 2003 Yz450 cams he gave me to make the auto decompression swap. I have read all of the articles on making the 400s auto decompression and i feel confident in making that swap. My Queston is, Can I swap out both cams, the exhaust and intake? Wondering if anyone has done this and what the results were. Thank you.