The first thing to do with your fans is sit your radiator back in the car and then place the fan in position on it. This will show you what you need to do to get the fan to sit in a position that will not conflict with anything on the car.
I found with the 14” fan that it could sit against the bottom of the radiator and would then clear the top by about 10mm. I had to modify slightly though on the face as when everything went back into the car and was tightened the grill put pressure on the face of the fan and the blades clicked as they past this point. If you are doing this job on the HR you could:
1) Do what I did and add two washers between the radiator and its mounting brackets
2) Grind a bit of plastic away from the fan grill.
3) Grind a bit of metal away from the grill mounts.
4) Mount the fan higher on the radiator.
