As far as I know there were different types for the "c" and "j" code 6.2's and all 6.5's got the "diamond" cups. Personaly experience has tought me that there is a different cup for the n/a 6.5 though. It appears similar to a "c" type 6.2 cup.
4 I think. One for the S engines and then there was the F engine ones prior to 99 and the diamond ones from 99 on. And I believe the N/A engines got a different one as well.
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