I have a leaking heater core hose. How much to change parts labor on 1999 Infiniti I30

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The hoses to the heater core appear to have pin holes in them. Are they special molded bends OEM. Or can normal hoses be used to replace and is it a DIY?
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It molded if it looks molded , u can usally bye it buy the foot and do it yourself
Or cut it were the pin hole is and join it together with 2 clamps and a pipe if in a