if you could fit the Asus in a P183 it shouldn't be a problem with the R3. So that's that solved.
Not entirely sure what I'll do with the fan situation.
From the P182 I can scavenge one inaudible, but inefficient Noctua. And three Antec TriCool. Two of which would have controllers dangling around inside the case. They can push lots of air at higher RPMs, but that makes them quite noisy. Perhaps I should just get
new fans as well.
The R3 comes with one 120mm in the back and one in the front. Think those are supposed to be ok but not great. I'd definitely want to put another exhaust in the rear top, and/or possibly on the side. Perhaps another intake in the front? I've never bothered to think about this stuff before.