Nah, the wrong category won't affect it much at all. All the serious eBayers use the search function. Unless the auction title is either really bad, or has misspelled words, most people will still find it. You can set up automatic searches on eBay for somewhat rare items like this, where eBay will email you when something is listed. I used to have that set up for 603 heads, but stopped after my white car got totalled... I bet this ends up in the $1k range though.
Side note - looks like it has vertical prechambers, based on the lock ring style. Probably came off a 1986/87 engine, where it had already replaced a cracked #14. :) +dmâ„¢ > ------------------------------ > Date: Tue, 10 Jan 2006 23:45:41 -0500 > From: Tjohn <[EMAIL PROTECTED]> > Subject: Re: [MBZ] 603 #17 head on ebay no affiliation > > I'm not so sure. This thing is mis-listed under the "instrument clusters" > section and may cut down on the views. I tried to post this auction this > morning, but it didn't go thru. It's had about a hundred views today. > > Tjohn > 82 300 SD 225K