Good luck getting Greg to port a set of heads for you. You'll probably be waiting months. It is hard to find any info on the Roe heads as it appears nobody wants to go to anyone else but Greg (see reply above - it's just an automatic response when anyone asks about ported heads and is one of the most irritating things about this community). I did speak to Sean multiple times about his heads and I'm sure that they are worth every penny, but I ended up going with Todd at A&C because he offered me an entire heads/cam package.