"Pro-comp" aluminum BB heads

Anyone got any info on the "Pro-comp" aluminum BB heads. Saw a set at Carlisle and they look interesting. Went on the Pro-comp site but they don't tell you squat (great for marketting, huh!) Apparently they're made in New Zealand. Would really like some more info on these.

they're not made in new zeeland, they're chinese copies of edelbrock victors. I've never heard anything good about pro-comps brand-X head castings.

http://www.hughesengines.com/general/techArticleDetail.asp?articleID=1000064