Used this on my last build and it worked out great. No longer needed with my new set-up... No need to cut into your upper radiator hose to "T" in a cooling mod. This will accept a 5/8 heater hose and keeps things clean under the hood. I'm also including the stainless steel plug that replaces the factory burp plug. It has the optional 1/4'' NPT thread on the top of the plug. $200 shipped!