Jarno Ive been looking at your previous pics and made an assumption that you shouldn't need to cut your rad.
Rather than just lean it back, just turn it 180 and then lean it towards the engine, the filler cap should then still point upwards. Admittedly, youll have a longggggg top hose, but is that so bad?
The rad and/or fan shouldn't care which way the air flows through it, the rotation of the fan can be reversed to push instead of pull if needed.
Ive really crudely mocked up a couple of images for clarity.
For reference the 4 items are engine, turbo, rad with filler neck and top hose and the intercooler.
Dunno if it will all work, but for the sake of 30 mins in ya engine bay dismantling things and roughly positioning stuff in place its worth a shot