I bought one from Beaumont and really like it. It is nicely designed and well made in my opinion.
http://www.beaumontmetalworks.com/index-perf-ap.html
After reading here on CC, I was worried that the external
oil filter hardware was choking off my
oil pressure so I wanted to upgrade to bigger lines anyway and this valve was made for size 12 hoses. When I finished installing it, my
oil pressure increased which only confirmed to me that my old size 10 plumbing was robbing my engine of pressure.
Get the valve...but also get the adaptor and move up to 12 hose. Adding a thermosate and all that other plumbing was just going to add more restrictions so I went this route instead and have never looked back.
joe