That too seems suspect. Does the S62 use iron sleeves? I think it uses a spray on bore liner just like the S65. And the deck heights should be within 10mm. Aside from that difference, every other part in the engines should be within a couple percent weight-wise one way or the other. And both engine will have almost the same parts since they are both DOHC V8s with chain drive valvetrain and dual VANOS.