For that amount of work you are far better off with the IC up front. During slow driving I have measured 180?+ underhood temps. The temps drop considerably with speed. The issue is once the IC is hot it takes allot of energy to cool them down, especially the bar & plate style. Any IC mounted above the engine gets baked when sitting or driving at legal speeds. I doubt you will be driving up at stupid speeds to cool a top mount down.
An SQ IC mounts forward of the radiator quite easily especially with a manual trans.

Cheers, Charlie
If It ain't broke, Modify it!
87 Montero turbo Converted back in Spring1989
95 Montero SR 3.8 DOHC Only one?
93 Pajero 3 door 6G75 Mivec with paddle shifted 5 speed
Then a Gen2 SR with full coil independent suspension.