Cooling System Conversion

I am currently doing the cooling system conversion on my 1990 4.0l MJ using the Moroso in-lin filler neck. What do I do with the hose from the top of the old plastic bottle?? Do I just join it to the bottom hose from the old plastic bootle??

Change the heater valve to the new style that does not have these hoses.

I used my pressure bottle as an overflow bottle when I converted my 1990 XJ. I put a fitting in the bottom for the small hose from the radiator cap, and put a length of hose on the old fitting at the top of the tank, directed down toward the ground. Works fine and it was free.

I did the same thing with the old bottle on my '90 but I get coolant coming out of the vent hose going around corners.