[R-390] R-390 (Non A) For Use With CY-979A Cabinet???

[triodes at optonline.net]

Guys,

I am restoring a Motorola R-390 (non A) receiver, and it will be installed within my restored CY-979A cabinet.
 
With the 6082 series regulator tubes (as used in the R-390) and the attendent heat load they create, will this receiver run the risk of overheating within the CY-979A? I do not know if the R-390 was designed to be installed in the CY-979A from a thermal standpoint.  I have seen mostly the R-390A receivers installed within this cabinet.
 
Hopefully, the engineers who designed the CY-979A designed this cabinet with suffiicient vent area and an effiicient convective cooling path to be used with the R-390, again from a purely thermal/heat load standpoint. Any guidance here would be appreciated!
 
73,
 
Bruce, W2XR