The Wright Cyclone, which powered so many WW2 and after aircraft (B29, Constellation, etc), changed over from carburettor to injection in 1944.
Not on the standard Cyclone, they didn't.
Fuel injection was offered only on the turbocompound series, and these became available well after 1944.
Pratt & Whitney seemed to stick with carburettors for a while longer.
No Pratt & Whitney civil piston type that I know about (including the R-4360) offered fuel injection, only pressure carburetors.
And yes, I have personally flown aircraft equipped with both types referenced above.