And, you're right. It's just some plumbing fittings. The relief valve is Grainger part #5Z763. The nipple fitting on the one end and the copper tubing were both from a mom & pop hardware store.
The problem with this is the nureled end. All that is there is a hole. I thought there might be threads to screw a fitting in to. There isn't. Thus the reason for the copper tubing. I found some that was just big enough to slide in tightly. I then used glue to seal things up.
***EDIT: The glue didn't hold that long. I ended up soldering the copper tubing in.
I'm not trying to take money away from the guy that's selling these or make anything off it. His website said 10-15 days to recieve the product. I don't want to baby my car for that long. My turbo vanes might get stuck by then.
Thank you to brucep for finding the part in
this thread. I can't take credit for all the work.