The fittings to build the Tee From The Speed Shop amount to a little over $ 15:00 bucks, I do intend to run s/s braided line to the gauge using there 6 foot line kit and a 2 5/8 Pro Comp Liquid filled gauge.I kind of highjacked a couple of posts on one of Massive's threads discussing this. I haven't put one in a Yamaha but I did put a warning light in my Wildcat. I did it electrically. However, my thoughts on adding it to the Wolverine is the same as what you described. The other option (I don't know how much rome is there for a Tee) is to use something like this: Dual Oil Sensor Adapter Kit - WR Edition-10060. That will cost more but Tripllec found some cheaper adapters out there. Personally I would get an electronic oil gauge. I don't like running oil lines but if I was, I go with braided s/s. I usually end up ruining the copper by tightening the ferrules to tight.