I have used the search function. I was wondering if 7648 was ever a casting that was made or if the 8 is just mistaken for a 3 when people list the heads for sale. I have seen a few posts with 648 castings for sale. Reason I ask is I might be able to pick up a set of 643s, just want to make sure they are not 648s, if they do indeed exist. Thanks!

 

10207643 is the casting number-not 648.

 

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