Rear/Cam Expansion Plug- Which way out?

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Joined
Feb 29, 2012
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Location
SoCal
My Car
73 Mustang Convertible
Born an I-6, spent the teenage, 20 and 30 years as a 302, but at 40 will reach full potential as a 351C.
First, because the FREEZE PLUG kit I bought for my 351C build had a 2 5/32 plug in it for the rear cam/expansion plug, and the size of the hole in my block is 2 1/4, I am assuming there are two different sizes of expansion plugs for this application.

This question is for the 2 1/4 application.

Which way does the expansion plug go in?

Does the LIP side go in first(unlike all the other freeze plugs) and get pressed/hammered in until it seats?

Or, does it go in as all the other freeze plugs, until it is flush with the block surface?

Thank you for your support, as always.

 
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