N/A:
Stock Crossfire intake box
Mercedes ML320 (cover only) + CAI (Needswings, etc.)
Mercedes '99-'04 CLK320 intake box
Mercedes '99-'04 500SL V6 intake box (w/ minor mod,see member FP)
...

SRT6:
Stock
Mercedes SL55
...(help me out, I'm less fluent in SRT6)



Those are the only 'covers' that you have options for... other than that you will be running coverless with pretty much any form of CAI.