Thought I'd post some info I just came onto. Staintune DOES still make a header pipe for the XR600, but it is not kept in stock in the US. The importer is CBT Imports up near San Jose. Their website is: http://www.cbtimports.com/ They have a list of their dealers, but will sell directly to you if you have a problem. The header for the 600 does in fact have the bolt holes to accept the stock heat guard. List retail price is $249, but my local guy is going to sell it to me for $225. (The stock rust-prone header costs $224 by comparison) Because it is ordered in from Australia, it takes 4-6 weeks for delivery.