I don't think the phaser will sound right. Try a tremolo pedal.
But, I digress.
To echo Dannybuoy's sentiments, you probably won't get the Heartbreaker sound with a fuzz pedal. A lightly pushed Orange Juice should do the trick! Although now I think about it, I've just got hold of a Chowny Fuzzster and it could probably get in the ballpark at least - a bit of light fuzz blended in with the clean.
With a tremolo pedal