either way you run it, the coolant is cooler then the oil. Oil is right there in the combustion chamber sealing everything off, so it gets alot hotter then the coolant I would think.
They way I ran my supply, was delete the TB warmer, cut the nipple off thats on the piece the upper rad hose connects to, then drill and tapped a 1/4NPT hole. THen i used a 1/4NPT to 6AN adapter, and im sure you can figure out the rest. I dont have this setup on my car anymore though, since im running an oil cooled only turbo