http://kingcylinderheads.com/
they come with a 2 year warranty
That company looks pretty reputable, and usually a warranty means a good product,
BUT proceed with caution. Just because they have a good lookin', well organized website and a warranty does not guarantee that they are good heads.
Both of those attributes get people to say " That company looks pretty reputable, and usually a warranty means a good product, " but in truth it is little more than a shinny wrapper over a turd, instead of that nice heresy's bar you thought you where getting. I say this only because that warranty has a lot of loop holes.
you can void it on many factors that they could blame on you but it in truth it was a part failure, and you would have no way to prove it. (basicly how, in my experience, all warranties work.)
Just putting that out there,
But i did a little research for you, Kind Head's sponsors several race drag car race teams, which in most cases means a good product as race teams don't normally partake in buying use less crap and keeping it.
I also found several people on different websites who have used heads from king cylinder head.com and seemed to be satisfied.
I have not used the product personally, so i cannot say it is good, but I say that if it where me i would consider purchasing these heads.
Just my .02