Need some advice
So, is this the Super 6 I'd need?
Yes.
Will it work with that Holly Carb?
Not without an adaptor. That Holley is a #2300, which has a different (larger) mount pattern than the Carter BBD/Holley 2280/Stromberg WW3 mount pattern of a Super Six intake. This adaptation has been done before. Other carbs that share the larger mount base include the Motorcraft 2100, which has been installed on slant-6 engines with good success; see
this post and the threads linked from it. See also
parallel 2bbl setup info and
Super Six article (some errors but mostly good info). Don't fret about the choke; if you wind up with a remote-choke carb such as a BBD, 2280, or WW3, you can install an
electric choke kit *that is
if you have an exhaust setup equipped to accept a choke thermostat. Give some thought to
Dutra Duals instead of headers for your daily driver. Carburetor operation and repair manuals and links to training movies and carb repair/modification threads are posted
here for free download.