[HarveyH]

Jabez, DO NOT convert to the 009 distributor. The advance curve is wrong for the Type 4 engine. There are numerous posts to this and the Rennlist boards on the 009. If you must go all mechanical advance, use the 050. If you don't HAVE to go all mechanical, use the stock distrbutor and hook up the vacuum port for additional advance. The PO used a 009 on my car when he converted it (2056, cam, dual 40 IDF's) and I ran it that way for several years. After reading numerous posts and discussions, I tried the stock didstributor (included by the PO) and it was a very real improvement. Started easier, pulled more smothly in hte low and mid ranges. Most Webers made in hte last 15 years or so (maybe longer) apparently have vauum ports installed. They arecapped with a small screw-in plug. Remove the plug, connect a hose to the advance canister, and you have vacuum advance.
Yes, you will need a Facet, or some other low pressure fuel pump. Carbs are usually rated in the 2-4 PSI fuel inlet pressure rather than the 28 or so for the FI system pump.
For a 2056 with a moderate cam, 40 IDF's, Crane HI-6, PS91 coil, Pertronix Ignitor, and plugs gapped at 0.045" I'm running:
28 mm venturies, 0.45 idle jets, 1.20 mains, F-11 emulsion tubes, and 2.00 air correction jets.

Good luck,
Harvey