PULLEY's

I don't know the correct pulley combination.
I have parts from; '69 small block w/p.s. and a/c
'70 slant six w/p.s no a/c
and a '74 small block manual steering with a/c
I need the set up for a '70 Dart small block no a/c and w/manual steering.
What crank pulley, water pump pulley and alternator pulley and bracket to make this work? Sorry if the question sounds dumb but I can't seem to come up with the correct arrangement. Please help.
Thanks,
ricky :banghead: