you can never have too much cooling. If you are going to this extent, you may want to run a trans cooler, run it in series with the inbuilt radiator cooler, and never have to worry about it again.
70 GT Ford Capri
302 Windsor (347 someday)
Auto, Manual - Manual, Auto.
(I'll work it out one day)
Hilux Diff - 4.1 Detroit Locker