if you havent already got a new radiator then i'd maybe consider another option.
With a 2tg i found that it sits very close to the radiator, mine got a beating from a little movement on the mounts. I went to a wrecker and picked up a larger single core radiator with a thermo fan from a 92 corrolla (i think)$120 and with a bit of mods, i fit it.
I bought a davies craig thermo swith a relay ($60) and wired it up. It is so much better. I needed a different top hose but it was a simples S shape (free from wreckers) and the bottom hose needed a metal piece of pipe to make the two diffretn hoses fit. I also made a heaps simple cover so that the altanator pulley couldnt tear it to pieces. I modified the top arms from the new radiator to hold the radiator, just cut the tops off to make them fit, real easy. A couple other mods were done, a real basic bottom bount for it to sit on, its pretty easy if you have the time and it looks so much better and my car never overheats.