I remember a while back somebody mentioned a variable cam sprocket for a G60, but I don't recall any manufacturer or price. I noticed in G60ing's post of charge coolers the first group of pics shows a Piper vari- something cam sprocket. I can't seem to find a website for them to find any more info. Anybody know anything about this? NOTE I am not talking about an adjustable sprocket but an automatic adjusting one. Thanks,