On 2/16/2019 at 10:01 AM, Zup said:

@240260280z

This photo of my 7/70 240z shows what appears to be the same "feature"?

No idea of what would be the reason for it.

Where is this car????

13 minutes ago, Patcon said:

Where is this car????

Will it be at Branson, 2019?

I have a nice door mirror if you need to complete. 

4 hours ago, 240260280 said:

I guess there are plugs on each side or is the underside a drain?

There is certainly a rubber plug on the inside hole but not sure about the hole underneath.

My 73 has plugs on top, and open on the bottom. Both sides.

I tend to agree with the production hoist / trolly theory, it looks like they would be in the right place for balance. 

The  micro fiche shows the rubber plugs. Although the drawings are not very clear.  They are only on the interior body side to keep water out of the inside. 

The only other plugs that I can think of are on the outside are the rocker panel plugs.