B.C
Just go to any auto parts store and ask for the upper rad hose for the dual alt set up. May want to call first to make sure they have it. Their computer will show the two different versions.
If you are going to follow my advice and switch to a true ELC coolant it is very important that you get all the old stuff out. Your method doesn't get out the coolant that is in the heater core. Plus you are using tap water and you never want tap water in the diesel!
Here is the easy but boring way.
Drain rad via the pet**** on the rad and a 5 gal bucket.
Fill with tap water from hose,
Drive truck until heat comes out of vents, of course heater on high, this circulates the heater core
Stop and drain through pet****, fill with tap water
Do this until water in the bucket is totally clear, took me 6 times.
Now you have nothing but 100% tap water in your system. You will need 20-24 gal of distilled water from the grocery store. Ask the manager most will give you a break on the price.
Instead of filling with tap water, fill with 4- 5 gal of distilled water
Drive until you have heat
stop and dump, refill with more distilled water
After doing this four times you will have nothing in the system but distilled water, on the last dump fill the degas bottle with 4 gallons of the concentrate ( not 50/50 mix) ELC coolant, and top off with distilled water. Watch the level over the next week until it burps the air out.
If you have any ? PM me
NCH