Yep +1A 200 tdi is over cooled as you will find out in the winter. Personally I like to keep my Defender as standard as possible. But if I was going to up grade I think I would up grade the intercooler.
I haven't even got a heat shield as yet
I fitted a wire mesh across the front of mine to protect the rad and Intercooler from stones etc. Great for when crossing the desert or behind the gritters in the winter time.View attachment 124143
I like that, looks pretty smart, gives it a slight look of the D1 Saudi Spec front grille, which I always wanted to get for my Disco. I might do this. Expanded Stainless Steel is it?