Hi all, I am just wondering everybody's opinion on the 1965 "K" Hemi aluminum heads? I am building another engine and came across a real nice set that were never cracked or milled to death. They do have newly installed valve seats - both intake and exhaust. The heads have not been run since the seats were installed. Assuming the seats were installed with the correct interference, what is your opinion of these heads? Are they prone to cracking, or do they have porosity issues, ie. bad castings with pin holes? They will be pressure tested before I build them. Just wondering everybody's opinion on them since there is some good Hemi knowledge here. By the way, the engine will be 9:1 compression with a very mild camshaft - it will be all show without the go. I just want to cruise around town and not race it at all. Thanks, Rob