[d_ford]

Although my TP is aluminum, it makes so much power that I can't imagine even a heavier iron engine wouldn't be a decent street engine. I currently have mine in a 68 fastback mustang but I don't have it finished yet so I can't tell you if the weight of the car will make a difference. When I had it in my first cobra it was incredible. As far as what it's worth, they are rare enough that it will be worth whatever someone is willing to pay you for it if you sell it. I have over 21K invested in mine but that includes the cost of a rebuild. I just learned that the alum. heads are some kind of Ford experimantal units with an SKS casting number? From what I was told Ford worked with Holman-Moody on different port configurations and all the experimental heads had this SKS casting.