Ok. yeah I recall reading this a while back.
I have a couple VW Vanagons (my other hobby/Subaru powered Vanagons) parts vehicles on hand. They use a translucent p/s reservoir. The fluid can be viewed thru the reservoir body.

I'm thinking I can use NWs kit and tee in the reservoir after the valve. I like the assurance of seeing the amount of coolant in the I/C circuit via a reservoir.
Thanks for the input.