One thing that I wasnīt happy with after the bigger radiator (donīt know if this will affect you)
I have a turbo and an intercooler on my diesel. I have a pyrometer on that turbo. and before the radiator if My pyrometer showed 700° c the water temp was not affected as soon as the temp went above 700°c it started to show on the water, and if I wasnīt carefull I had to take it easy for 15-20 minutes to let the water Temp go down....... after the bigger radiator my pyrometer can go way hier (so hi it is scary) have seen numbers like 1000°c + (then I turned it off and ditnīt wanna know)
But I have never had any problems with the water temp.
I donīt know how the blower works but I would like to know is this something you should be thinking about?
How is your fuel mixture? I here that to ritch of a mixture will cause high exhaust temps. If you are smoking heavily you may be too ritch. I also understand 1300* F is ok, but any higher and you may start having problems.
This thing has had problems getting hot at hwy speeds way before the turbo, but is bad enough now that something has to be done.