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.