Hmmm, okay that's good info.. I took her for a spin today and didn't notice a change in temp, but now you have said that I may have to fab up something. I will give her a hard drive tomorrow and see what happens.
The Rad came from Autobarn, for an R33 and she plonked in no problem into the rubber seats down the bottom. The top brackets I will have to move inwards, no biggy.
Radiator and fans $520 and about 3 hours to install, wire and pretty up ... between beers.
A little strange feel now with the revs climbing faster without the weight of the old fan, I freaked out how heavy the old suckers are when I took it off.