well i dont know where to get just a cam but if you are willing to pay a little extra Gude does a head package that comes with a cam for our D17a1 they claim 50 hp untuned. which i have trouble believing. Its a regrind but i guess the way the rockers are in our engines it doesnt matter, the reliability is still good. im still going to get it when i have the money, just cause i also want a little more N/A power... its at gude.com just email them and they will give you price and what the package includes its been i few months since i lasted looked so i dont remember all the details ... would love to see you get it to see how it works on our engine... hope this helps you