So i guess the turbo cars used a 4 barrel of some kind ?
No. The turbocharged Corvairs only had a single one-barrel sidedraft carburetor. The 150 hp rating continued with the turbocharged engines from 1962-1964, even though the engine displacement increased in 1964 from 145 ci to 164 ci. In 1965-1966 the horsepower rating was increased to 180 hp. The turbocharged engines were discontinued after 1966, when the Corsa model was dropped. However, the 140 hp 4x1 carburetor configuration continued to be offered until the end of Corvair production in the spring of 1969. In addition to the 2 primary and 2 secondary carburetors, the 140 hp engine also had larger intake valves in the cylinder heads.
Manual chokes were only used in 1960 and 1961. All other years utilized automatic chokes. The 1960 and 1961 also used a different distributor design, with the centrifugal advance weights residing under a large rotor. In 1962 the distributor was redesigned, with the centrifugal advance relocated in the distributor housing, under the breaker plate. Late model (1962 and later) distributors can be installed in 1960-61 engines.
The air cleaner assembly in your 1961 looks like the design used only in 1960.
After-market center-mount two and four-barrel carburetor manifolds have been installed in Corvairs for many years, and they can perform quite well. They are primarily installed in conjunction with 140 hp cylinder heads, since those heads have larger intake valves and four carburetor mounting pads, and are usually configured with dual exhaust or headers with dual exhaust. Weber carburetors, adaptation of other carburetors, and Electronic Fuel Injection have also been tried on Corvair engines, with varying degrees of success. The center-mount four barrel configuration suffers in performance in cold climates, since the carburetor is isolated from engine heat (some manifolds were configured with engine oil circulating through a chamber in the bottom of the manifold casting, to warm the carburetor with heat from the engine oil).
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I would like to help break down the codes on the body tag of your Corvair, but there are some variables that are hard to decipher without the complete tag information. Can you possibly post a close-up picture of the body tag in your Corvair? 
1966 Corvair Corsa Convertible
Here is a breakdown of the information on the body tag you provided...
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