Ahh thats the sort of info that i am chasing. Some logic from some body that knows. Cheers Dodgeman.
Working out what sort of hp to aim for is difficult to visualise as I have never had any of my cars on a dyno to match numbers with experience. If you think that about 100-110bhp is enough, then thats the aim. This car is really only going to be a Sunday/ nice day driver as I have another car that is more suitable to my daily grind.

The end result that I want to achieve is a car that looks stockish, and unassuming, a sleeper if you will, and has enough go to make people think that they are dreaming and a car of that vintage should not go that well. I guess i want t it to fit into a fast street catagory.

What sort of modifications should i be looking at to achieve this 110 mark. I am gussing
Mild head porting
extractors and good exhaust
EFi of course
thermo fan if I can find one to fit.

If the concenus is the 1000 radiator is good enough, then ill stick with that, at least for the time being.