I don't know if they make a traditional Ramadan meal, but I do know that Sana (on Jean-Talon near de l'Acadie) is a Pakistani restaurant. I've never seen alcohol there, so I assume that they follow Muslim rules on dining, which means they should be able to serve something for a Ramadan dinner.
Yes, I don't really know either, but perhaps try Tabaq, a very good Pakistani resto near Jean Talon Market (the Muslim guide will help you) I'm sure they must do Iftaar. 149, rue Jean-Talon Ouest 514 277-9339
L'Olivier, (Tunisian) at the Jean-Talon Market, does Iftaar, but it is a rough-and-ready setting on the terrasse (the food is very good though) mostly for the many Muslims who work in and around the market.
Not exactly a direct answer, but since no one else has replied yet, thout you might try calling some of the restos listed here:
And not sure if it's is still open or if you'd consider a Yemeni resto, but in 2005 Maeve Haldane reviewed Al Mandy during Ramadan: