I really like the high riser Dove heads but I'm leaning to the med riser SK-35369's. They say that they can be made to perform as we'll as the high risers. I'm looking to go nostalgia super stock racing with my 67 Fairlane so I think that I must stay with the med. risers to keep within the rules and be "period correct". I'll research the BT's too, they are a nice head. 800hp never comes cheap and will be a little tougher with the 427 than my 514 that I had in the car. Thanks for the help and link FFR!