273 Commando ignition wire question

Here is a pic of the driver and passenger side covers. Oddly they have 2 different types of wire holders?! I am going to change the drivers side to the "w" type if wire holders. The MSD wires fit in those.

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Yep, the pcv cover is a 67 and has the W style holder. The drivers side cover has the 65/66 individual style holders.