1970 carter 4933s,Rebuild or buy edelbrock?

Hi all, Its been a while but I finally got a new toy, 70 Dart swinger 340,And 1st project is the carb,gaskets are leaking and runs little ruff.Is it worth rebuilding or should I be looking at Edelbrock avs.Any and all advice .I am pretty sure motor is stock, maybe a little cam.

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