Ferrari used webers. Here are some nice pics:
http://www.inglese.com/chevroletv8.htm
shwing
http://www.piercemanifolds.com/hotrodproducts.htm
or-
Offy Intake and 3 Rochester carbs and linkage from Summit are about $1,000 similar to factory Corvette pieces ca. 1966
or-
For the 3x2 induction system, complete, tuned, ready to bolt on, try
Racecars in Retrospect
330-823-6167
For the rocker covers: I just prefer the cast aluminum look ( 1960's Ferrari) as opposed to the machined billet look (1990's Coddington)
Almost every swap meet I see Cal-Custom rocker covers, timing covers, fuel pump block-offs of that nifty cast-aluminum and black "crinkle" paint going for cheap. Seems no one wants it anymore.