Hi guys awsome forum it is nice to see and hear of other fe fans.  But I couldn't help but notice not many people use the shelby Mr head.  Is it just due to cost or is there other major problems to make others better? Would there be that much of a loss in power on a street car under .600 lift in comparison to tfs heads.  A friend just put a set on an old 427 block with a 4 inch stroker crank.  A bad intake choice really killed power, the port matched performer rpm couldn't flow enough.  It made good power and torque form 3 grand up but stopped off at only 526 at 5800.  Engine builder dyno operator suggested a victor junior would be worth 50hp plus. The motor produced more peak torque than horsepower.  Has there been many out there with shelby head expirence out there?