Ok, I'm aware and I admit comparing 2 valve wedge heads to 4 valve hemi heads is not a fair comparision but I only used it as an example suggesting that unshrouded vales ain't the whole picture in the quest for more HP. I only asked a question if you remember correctly.. Which heads are better? Terry emailed me and responed jag/ls heads are! Didn't say why though (aside from direct acting cams).. Sure would like to hear!