Heater Core Bypass

Engine Cooling problem 4 cyl Four Wheel Drive Automatic

I have a '98 Kia Sportage with a bad heater core. I know you can bypass the heater core for a temporary fix, which is what I want to do so we can use the car until we can afford to replace the heater core. But, I cannot find the heater core hoses. I tried looking under the dash on the passenger side. I know they should be coming out of the firewall, but I do not see them. I also could not find them from under the car or under the hood. Do I need to remove the evap unit to access the hoses? Where can I find these hoses?