Spec lines and variants of a car

[Z3_GoCar]

Hey Josh, this is a second variation on that theme. Last time it was about the crankshafts from multiple generations that share the same part number, this time it's swapping the head between different generations.

[JeffYoung]

But Josh is right. If these parts are identical, then there is no issue.

Are you saying they are not identical?

Hey Josh, this is a second variation on that theme. Last time it was about the crankshafts from multiple generations that share the same part number, this time it's swapping the head between different generations.

[Lael Cleland]

If they are the same they are the same... Cams may be different threw the years due to changes in emissions.