I'm going to attempt a partial grille block on the CRX, as well as construct a ducting that forces what air does go through the grille to the radiator. The HF's is TINY, and I want to make sure it gets all it can.
But, I don't like the look of grille blocks outside the grille. In theory, for the changes we are looking at would there be any real negatives to having it mounted just behind the grille opening, flush the the grille's "teeth", to say?