You will notice that early blocks only have two Freeze Plugs per side. Now if you install this in a 67 GTO it will be easy to tell that it is an early block. Of course, if you are going to "Royal Bobcat" your GTO then this is what you want. I do not use the Popular term "Tribute" I do not see a reason to build a Tribute. Let's make it look exactly correct! Make em wonder!
