carby issues on 1975 chev custom

[KRL-94]

hi all,
got a family friend thats had a few issues with the carby on her 1975 model chev custom 30 series. its a 292ci straight 6 with a single throat rochester carby. form what i've been told its flooding and wont run properly. it was suppose to be rebuilt a while a go due to a fuel leak, but it had a bodgey job done in it instead of the proper thing, and it didnt leak fuel again. is it possible to either:
A) get another one, or
B) get a rebuild kit for one.

if you wish to see pictures, let me know and i will post a few up.

cheers Kole.