I know what you mean, I have a GTT and an oil cooler to fit soon. Washer bottle and power steering cooler sits really low down in that area. I wanted to put it in the drivers side wheel arch, but I'm now thinking between the FMIC and radiator might just be easier. My only concern is that more heat is going to end up going through the radiator, but I doubt it would be much when you are travelling at speed.