If you buy into the values being that high for those heads, you might want to take my guy up on his 2 for 1 offer.
The guy you link to has his numbers mixed up somehow. His information is not totally correct. He mentions they would be "outwardly" correct. They would be the wrong numbers for the 58 Fuelie. Also keep in mind that there are 4-5 different HP models in 58, and 2 of them are Fuelies.
Also, when building a numbers correct car, the date codes need to be correct to the dates the vehicle is made. For instance; The heads and engine block should be made withing a couple of weeks of each other. The engine should be made a few weeks earlier than the vehicle. Anything with a date code would have to made before the assembly date of the vehicle, within reason. June heads would not be correct for a May vehicle. Those are the differences the Corvette guys are looking for and willing to spend money on.
