Re: Hot and bothered
It could be done, but you would need to remove the rear seats, and probably install side cooling fins as per the old Clio V6 for good measure.
A lot of modern cars the grille is huge and provides more than adequate cooling, typically only a small amount is needed. Look at a pre-facelift early Ford Sierra V6 - it didn't even have a grille!
Similarly the Passat VR6 of the late 80s, which was grilleless to ape the old water cooled models.