I'd think the heat soak would be an issue on top, make sure you use a thermostatic sandwich plate to avoid running too cold. My cooler is between the A/C condenser and the Intercooler, the inner wing is also a good option but mounting is more difficult and you don't get the benefit of the fans cooling when stationary.
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2005 Spec B 6MT - KiDO tuned (~270Bhp)
Custom exhaust - Cosworth filter - Samco Intake - Tints - Bilstein B8/B6 & STI springs - SuperPro ALK - Whiteline positive shift kit, rack mounts, rear adjustable camber bushes, front ARB mounts & strut brace, 20mm rear ARB with AVO mounts, - Hardrace Gearbox and pitch mounts - Prodrive PFF7's - Front Brembos - Kenwood CarPlay - 1/2 carbon grille - STI front splitter