FYI there were more than 5 alu blocks.2 that I have owned were part of 6 that were removed from a trash bin at the factory.The one I built had casting flaws and some porosity leaks.Found out AFTER it was built and on a dyno.Not sure how many actually got out of the factory out the back door.The 2 early alu blocks for the hemi heads are the rarest I have seen,heard of or owned.Still working on getting them machined.Tom
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