help from any air cond. tech

[veltex]

Hi all, I am in the process of trying to put my ac back together, truck was wrecked a while back, didnt get around to putting air back together until now, worked fine before. Condenser and drier and those lines were smashed in accident and somehow one of the small lines on the poa valve got broken(probably hood hinge), was thinking of using used stock stuff, but am leaning now towards some new parts from nostalgic air, cond/dryer, gm comp. fitting, exp valve, and line kit, should get everything under the hood updated, finally my question is the broken line on the poa, it is labeled "to oil bleed line" in my manual, it broke off right at the fitting, can I put a compression type nut back on? brake line type flare ? the original is a smashed flat collar in the line with an o ring, I'm pretty ac stupid so any help here appreciated, thanks