Hi
Interesting comment about the harmonics.
When I worked in a performance VW shop, when we fitted a higher comp, higher performance motor to a customers car its transmission would develop an overrun noise which wasn't there before.
We put this down more savage pulsing on overrun, fitting a sprung centre clutch plate helped.
A 6 cylinder motor would have more even pulsing than a 4 cylinder.
Anyway now I have the peace of mind knowing I'm not grinding my transmission pieces.
I only had my front end aligned, I still have a bit to do to correct the toe out on the rear.
I fitted some offset pivot bolts made by a local drag racer which helped a lot, just need a whisker more.
Steve
The pivot bolts