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Cylinder Spacing of Countach 5.2, Diablo 5.7 & 6.0, & Murci 6.2

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When Chrysler made the initial Diablo 5.7 engine I expect they 'stretched' the cylinder spacing or bore centers of the Countach QV/SA.
I also guess that spacing was kept through the Murci 6.2 but finally increased for the 6.5. Am I correct?
Thank you.