Theres no such thing as 'cold air' in a uniflow head situation...
I'll quote FI...
The exhaust proximity isn't much of a problem. It's a uniflow head, the intake ports share the same walls with the exhaust ports, the intake manifold is attached to a 180*f cylinder head and the air is 200*f+ at 13psi.
from this link...
Butchering the intake - part deux
Post #43 of that link shows the temps of the intake manifold... draw your own conclusions.