The 4.3's aren't AS narrow as the 3.3. Try going to a local shop or someplace to just sort of check the out the fit of the shoe and walk around in them for a bit. That's my best advice for now. You will never know until you try.
Racquet : TGK238.1 2X / Head YTPP 1X
Strings : BHB7 17G 49lb / LUX 4g Rough 17G