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I put a set of ModRods siden panel vents on my M8 (cant beat the unless you make your own) and a MadFab Designs gage cage on ... Guy on here makes the "madfab" one, can't remember his name though, but I liked it better than the AMP one because it has a screen on it.
IMO, people go overboard with venting. The cage vent and some side panel vents are all you need.
I would recommend the gage cage though, youd be surprised how much heat that vent alone lets off.
Nice gauge lifter Dogmeat
The MadFab one is mine. Not only does it come with the mesh/screen installed, it has an adjustable angle and it's a smokin' deal for a useful product.
PM me for details. I make them for 05's to 11's, all models.