I am installing the engine/tranny I rebuilt this weekend and I was looking at the engine bay yesterday and thought I would replace the old heater core hoses. I did not mark them when I took them off (...i know, duh) so I was wondering does it matter how it is connected or is there a specific way. I tried searching but could not find a detailed answer.

There are two pipes that stick through the fire wall, one above another. Which pipe of the heater core connects to which pipe of the water pipe? Thanks.

I believe they correspond just like you said. The waterpipe has one above the other, just like the heater core itself. Top to top, bottom to bottom

1995 Eagle Talon ESi
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it doesnt matter...

1998 dodge avenger 4 cyl AT
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The heater core is up and down but the water pipe is side by side. If it doesn't matter than cool I will just hook it up and go. I figured it probably wouldn't but I figured better to ask.