Hi mate,
nice job, I'm in the middle of doing the same. I only bought my 34 a coupla weeks ago and one the way home from picking it up the "standard" clutch fan shredded the radiator?? So the seller fixed me up with a non-turbo rad until he could get me a gtt rad and changed the fan back to the one that was originally on it (this fan had been cut down with a knife).
Anyway this new set-up lasted one 5km drive until the fan chewed it up, I swear they were on backwards but i've seen 3 of them all the same way so dunno? So when he got me the new (very 2nd hand though) rad I went out and got twin 12" thermos (calibre) and davies switch and they kept the temp awesome for about a week, then next drama it looks like after a bit of mountain driving that the bolts from the thermos have bounced a bit and nicked the rads tubes, but the rad was in pretty old condition so it was expected. The temp switch needs to be high-temp siliconed in and use screw-type hose clamps and she gets a perfect seal, but boot_its direct switch looks heaps better and easier!
So now i'm trying to get a new alloy rad, but most don't seem to have the auto-trans cooling internal? did the one from autobarn have this? also looks like the 16" wouldn't fit, sux cause there 120% cooler than twin 12s but it won't fit on a standard rad either. been looking at the JJR cooling pro from just jap, anyone using this rad outthere know what they're like and if they can fit a 16" davies craig?
Cheers
Dyl.