Air cleaner fastener and extension bolt identification

[zed2]

Can anyone identify the model year/production year of the two different length air cleaner fastener bolts?

Left pair style is 81 mm, right pair style is 78mm

Also, can anyone identify the model year/production year of the two different length air cleaner extension bolts?

Left pair is smooth sided, right pair is notched

Thank you,

Keith

Edited July 7, 2022 by zed2

[CanTechZ]

If it helps I created this sketch of my 7/70 car for another discussion.

 

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Edited July 7, 2022 by CanTechZ