SE.5a engine cowling detail

[johnd]

Evening all,

I'm building the Revell 1/72 SE.5a and while in most areas there is adequate detail for my needs, there appears to be something missing on the underside of the cowling, namely ventilation slots. Now good old Google shows pictures with two distinct styles, one with four long slits, the other with four banks of two shorter ones. My feeling was that the former matches up with the four blade propeller and Hispano Suiza engine, the latter with the two blade airscrew and Viper engine. Am I being naive?

Sorry if I'm asking a basic question, this isn't my normal area, just a change from the usual.

John.