Externally, the 302, 331 & 347 are the same. The 331/347 are just a basic 302 block with a stroked crankshaft and bored cylendars. I've never dealt with either of these myself but it should drop right in.
Also, if it were me I would stay with fuel injection. You can get the power you want from either carb, or injection though. Using a carb would clean up your engine bay by using less wiring. So in short, it's all up to you which way you want to go.
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