So, I took one of the Enjuku S13 conversion heater hoses, and cut it to fit the situation that I'm in: I'm putting a red top SR20 into a Kouki S14, and I already had the engine in before I realized I needed to do this.
I am ok not using the heater, since I live in Texas, and this is not a daily by any means. Also, the previous owner had put plain water in a leaky KA24DE, that resulted in horrendous corrosion everywhere and a pretty tragic headgasket failure with oil and water exploding out the side of the valve cover gasket.
I left the hardlines around the back of the SR, with the coolant to the turbo line intact, and then connected each with a loop. This is shown in the following pictures, with the last one being from the passenger side looking on from where the current heater hose inlet/outlet are in the firewall. The others are from the driver side looking into the back of the SR.
