The tubes are vacuum secondary pick up tubes.
The Galaxie 1.08's all seem to have 2 of them this only seems to slow the opening rate of the secondary.
These also have the hot idle compensator. This valve came about in 1964 from what I can tell and was used on all 1.12's and some 1.08's
I'm not sure why the Mustang 1.08's never seem to have the hic valve.
the top you have will work just fine.
Ed Jenkins
Ford Galaxie Club of America member #3350
1966 Galaxie 500 Convertible built in Chicago Illinois, will have a stroker 390( 429 cid?). 780 Holley?, built C6, Crites Aluminum radiator, and a rust free frame from the south. Work continues.
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