You don't need to buy a new distributor, I just got one off a commodore blue motor and fitted new leads, coil and ignition module on SWMBO's torana. Put it on a couple of years ago when I got sick of adjusting/replacing points every 8 months or so when the rubbing block wore down and closed the points. Timing's been right ever since. As has already been said, check whether the coil needs a resistor or not, maybe the new condensor is cooking if you have 12v on a resistor coil, also check the insulator on the points wire terminal.
