just thought i'd pop in, in case anyone has any interest, i just put a honda 4518 cylinder head up for sale on ebay ( http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230522630644&ssPageName=STRK:MESELX:IT
it came off an engine that had thrown a rod, but no overheating issues. just to be on the safe side, i had NAPA machine shop check it - found the head is still true (under .002") - there's a shot of the receipt from NAPA stating that.
i realize it's been awhile since i've been on these boards but will be re-activating my interest - i had a life emergency that kind of took my attention away from a lot of things, including tractors
let me know if anyone's got any interest - if you care to call, my cell is 804 502 0449, but please, no calls after 9:00PM ESt (I'm in richmond, VA)