For Roush intake owners the heater core hoses are special to the kit. I found that if you buy a stock heater core hose it can be modified to closely match the one that came in the kit.
I only replaced this one hose because the other one looked in real good shape.
Also in doing my reaserch about replacement cores i kept hearing stories about the pressure blowing out the aluminum cores. Some say that is on the fox bodies some say it happens on the 94+ as well. Who is right i don't know. But the fix is a pressure reducer that fits inside the hose.
The new water pump i got is suppose to flow more so I installed it on mine just incase.