IMO and FWIW a 60/65MM cam core is not something necessary for almost anyone building one. Not to mention the 60/65MM cores for Wedge headed deals are not exactly sitting on shelves everywhere if anywhere right now. I have a Wedge block on order and was wanting a 55MM core as we already have the cams and for what I'm doing a 60/65 is an additional unneeded expense. Sure would like to hear the rationale behind this decision. For a boosted Hemi or a max effort NA deal I might understand it but for the overwhelming majority of these builds I just cannot see it. I have a 60 in my Predator and it makes sense there, we also have one in the SBC Heads up deal, but we are talking 10K plus RPM with it.